Recaps

Zhang Tianyuan told Amelia that the higher-dimensional beings who had enabled humanity’s gravity solution were gone, so Plan A could not succeed. Amelia, disappointed but still hopeful, asked whether another way to save humanity existed.

• Zhou Kun brought Amelia and Jody to the work area, where they joined Zhang Tianyuan and the aerospace experts around a hologram of the Solar System.
• Zhang Tianyuan questioned Amelia and Jody about their plans to solve the gravity equation and their shortage of experienced astronauts, then checked whether anyone had recently broken into the NASA base.
• Amelia told Zhang Tianyuan that NASA’s Plan A was to solve the gravity equation and that Plan B was ready if it failed.
• Zhang Tianyuan told Amelia that the beings who had placed the wormhole near Saturn no longer existed and that Plan A could not succeed without them.
• Amelia asked whether Plan B was their only chance and urged Zhang Tianyuan to reveal another way to save humanity.

Zhang Tianyuan explained the Mutual Aid Society’s aid to the country and challenged Amelia and Jody over their government’s treatment of starving people. He then showed them the Society’s rocket assembly building, where a black portal opened and a rocket transport truck emerged.

• Amelia grabbed Zhang Tianyuan, then let go as Jody urged her to calm down.
• Zhang Tianyuan revealed that the Mutual Aid Society was from another country and described its food, medical, and industrial aid.
• Jody asked for help for his people, but Zhang Tianyuan confronted him about the executions of starving people in the desert.
• Amelia argued that the Society’s help could save those suffering, and Zhang Tianyuan said they needed to consider how to cooperate with the Society.
• Instructor Yin reported that the final assembly building was ready, and Zhang Tianyuan led Amelia and Jody there.
• Amelia watched a rocket transport truck emerge through a black wall and asked whether it was a secret door.

Amelia and Jody discovered that the vehicles were passing through a two-dimensional Spacetime Tunnel and learned that the Mutual Aid Society came from parallel spacetimes. Zhou Kun explained that a global migration was being planned, but those responsible for the unrest might obstruct it or face accountability.

• Amelia and Jody watched transport vehicles emerge from a black void at the factory, and Zhou Kun confirmed that it was a Spacetime Tunnel.
• Zhou Kun explained that the Mutual Aid Society was a cross-spacetime rescue organization whose members came from parallel spacetimes.
• Zhou Kun said their spacetime planned to join the society and migrate nationwide with its help, while a global migration plan was also being developed.
• Zhou Kun warned that powerful sinners might obstruct the migration to avoid accountability, and Amelia argued that they had supported Professor Brand's plan.
• Jody asked what they would need to do to join the operation, and Zhou Kun said the society was satisfied with their recent attitude, which Amelia and Jody realized came from Professor Brand's instructions.

Amelia and Jody learned why the Mutual Aid Society distrusted North America and decided to return home to inform Professor Brand. Before leaving, Amelia joined the Society and established a direct communication channel, then the delegation departed for North America.

• Zhang Tianyuan explained the past crises in other spacetimes that had made the Mutual Aid Society wary of North America, and Amelia and Jody privately agreed to keep the revelations confidential.
• Amelia and Jody contacted Professor Brand to say they were returning with an important matter, then Amelia went to tell Zhou Kun that the delegation was ending its visit early.
• Amelia asked Zhang Tianyuan to let her join the Mutual Aid Society, signed a membership agreement, and received a satellite phone to contact Zhou Kun and an operations team captain surnamed Yin.
• Amelia told the delegation the visit was over, and its members boarded a plane that night and set out for home.

Amelia and Jody returned to the NASA base and told Professor Brand about the Parallel Spacetime Mutual Aid Society and its offer to help humanity migrate from Earth. After learning why the Society distrusted their country, Professor Brand decided that he and Amelia should leave the base.

• Amelia and Jody brought the Mutual Aid Society agreements to Professor Brand's office after returning to the NASA base.
• Amelia explained that the Society came from a parallel spacetime and used Spacetime Tunnel technology to help humanity leave Earth.
• Professor Brand questioned Amelia and Jody about the Spacetime Tunnel and concluded that its migration plan was better than Plan A.
• Amelia and Jody told Professor Brand that the Society distrusted their country because of events in other spacetimes and would cooperate only if it approved their proposed terms.
• Professor Brand said the innocent people deserved help but that he could not persuade the Society to cooperate with them.
• Professor Brand told Amelia that it was time for them to leave the NASA base.

Professor Brand decided to abandon the base and join the Mutual Aid Society’s effort to relocate humanity, bringing the Lazarus mission’s people and data with him. With the Society’s approval secured, he began preparing to leave and singled out retired astronaut Joseph Cooper as someone to recruit.

• Professor Brand told Amelia and Jody that they had to leave the base and submit their wormhole data before the Mutual Aid Society’s spacecraft completed its exploration.
• Professor Brand ordered Jody to track the spacecraft and asked Amelia to negotiate support from the Mutual Aid Society for bringing the Lazarus team over.
• Amelia contacted Zhou Kun, who reported Professor Brand’s plan to Zhang Tianyuan.
• Zhang Tianyuan approved opening a Spacetime Tunnel for Professor Brand’s group, and Zhou Kun relayed the decision to Amelia.
• Professor Brand began reviewing the base’s project records and pointed out retired astronaut Joseph Cooper as someone they should bring with them.

Professor Brand began gathering talented people, including the former test pilot Joseph Cooper, as potential assets for the Mutual Aid Society’s plans. At a meeting with his closest colleagues, he questioned whether humanity still had hope, leaving them unsettled.

• Professor Brand and Amelia reviewed old files and identified nearly a hundred potential recruits, with Cooper among the priority targets.
• Amelia secretly gave the recruitment list to Jody, who promised to arrange discreet outreach under the cover of a new project.
• Professor Brand summoned the trusted members of plans A and B and heard their routine progress reports.
• Professor Brand told the group that fifty thousand starving people had been driven into the Nevada desert, then asked whether they still believed humanity had hope.
• Williams replied that hope remained because only a little work was left on the gravitational equation.

Professor Brand revealed that Plan A could not solve the gravity equation without data from inside a black hole, then offered his colleagues a faster, more successful confidential alternative. A few days later, Jody arrived at Cooper’s farm to recruit him for the new plan.

• Professor Brand told the conference that the gravity equation’s derivation had failed because its solution required quantum data from inside a black hole.
• Professor Brand admitted he had known the problem for ten years and had kept Plan B as the only viable option.
• Amelia announced that a new approach had been found, and Professor Brand said it could save more people and proceed faster than Plan A.
• Professor Brand warned that the confidential plan would bring pressure and difficult choices, then asked everyone to decide whether to participate.
• Amelia and several colleagues raised their hands, while others hesitated or declined; Professor Brand recorded their choices and ordered them to keep the meeting secret.
• A few days later, Jody reached Cooper’s farm with a guide and set out to persuade Cooper to join the new plan.

Jody and a NASA team arrived at Cooper’s farm to recruit him for a new project, but the wary family greeted them with shotguns. Jody revealed that NASA had found a way to save all of humanity, leaving Cooper to decide whether to hear the plan.

• Murphy spotted unfamiliar visitors, and Donald armed himself before opening the door and frightening Jody into falling backward.
• The sheriff helped Jody up, and Donald apologized and explained why farmers treated strangers as potential threats.
• Cooper returned with his son Tom, and the two entered with shotguns before their family calmed them down.
• Jody introduced himself as NASA’s leader and asked Cooper to become an astronaut again, but Cooper refused because his family depended on him.
• Jody told Cooper that NASA had found a way to save everyone on Earth and asked whether he wanted to hear the plan.

Cooper agreed to join Plan C after learning that Earth’s oxygen supply was collapsing and that the plan might save his family and humanity. He left home for NASA’s secret base, where the team prepared to launch Plan C by replacing original documents with copies.

• Jody explained Plan A and revealed that the team had abandoned it in favor of the more promising but secret Plan C.
• Cooper learned that Earth’s plants and ocean algae were disappearing, then agreed to join Plan C despite not knowing when he could return home.
• Cooper told his family about his mission, but Murphy refused to say goodbye while Tom and Donald accepted his departure.
• Jody returned with Cooper to the base, where Amelia reported that nineteen recruits had agreed to join Plan C, making Cooper the twentieth.
• Professor Brand prepared to launch Plan C by replacing original documents with copies and had Jody sign a Mutual Aid Society membership agreement.
• Professor Brand gathered the Plan C participants in a conference room filled with original documents the following morning.

Professor Brand revealed that Plan C lacked official support and could be considered treason, giving the gathered recruits a chance to withdraw. He then introduced the Mutual Aid Society in East Asia as the basis for Plan C, leaving Cooper on the sidelines as the others questioned Amelia and Jody about it.

• Professor Brand warned the group that Plan C could be considered treason and allowed anyone to withdraw, provided they stayed in the conference room for two hours.
• Cooper decided not to join Plan C because he still had two children to raise, and he moved away from Professor Brand's group.
• Amelia distributed documents describing the Mutual Aid Society, its reconstruction work in East Asia, and its exploration beyond the wormhole.
• Amelia and Jody answered the gathered recruits' questions and described what they had personally seen of the Mutual Aid Society.
• Amelia suggested the organization might avoid cooperating with them because of their practice of executing starving people, while Cooper watched from the wall and wondered what was happening in East Asia.

Cooper watched Professor Brand and his team prepare to leave through a Spacetime Tunnel to another parallel spacetime, torn between his family and humanity’s future. With only minutes to decide, he signed the agreement and followed them into the tunnel.

• Cooper reflected on his lost astronaut ambitions and hesitated to join Plan C because he had a family.
• Professor Brand told Cooper and the others that Plan C was about to begin and offered them agreements to sign before leaving.
• A Spacetime Tunnel opened in the conference room, and Professor Brand, Amelia, Jody, and the other members pushed carts of materials through it.
• Jody warned the remaining people that the tunnel would stay open for three minutes and that they had to sign the agreements to pass safely.
• Cooper signed the agreement as Joseph Cooper and charged into the Spacetime Tunnel.

After Cooper and the others entered the Spacetime Tunnel, they arrived in No. 4 Spacetime and encountered the giant mech Crimson Typhoon. Mako Mori welcomed them and arranged to receive their materials and introduce them to researchers, leaving them on the way to meet someone in a conference room.

• Cooper and the others rushed through the Spacetime Tunnel, while three holdouts remained behind and realized Brand's group had vanished.
• Amelia and the others arrived in a vast hall and stared at the enormous humanoid robot being repaired.
• Mako Mori introduced herself as head of the base's technical research and development department and explained that the mech was Crimson Typhoon, an outdated combat robot.
• Mako Mori arranged for specialists to back up the visitors' materials and said physicists would travel with them to exchange ideas.
• Professor Brand left students familiar with the project to assist with the backup, and Mako Mori led the group to a conference room to meet someone and the wormhole research team.

Taylor questioned Professor Brand about the starving people after they joined the Mutual Aid Society, seeking information that could support a proposal for intervention in other spacetimes. Meanwhile, NASA sealed its base after learning that Professor Brand and many others had vanished.

• Taylor praised Professor Brand for joining the Mutual Aid Society and asked for firsthand information about the starving people.
• Professor Brand described how the starving people had been driven away, confined, enslaved, and slaughtered.
• Mako Mori explained to Amelia that Taylor was gathering evidence to support a new provision allowing the Mutual Aid Society to intervene in other spacetimes.
• Zhang Tianyuan dismissed Taylor's proposal as futile and said it would not pass the fourth branch.
• At the NASA base, the three people who had missed Plan C reported Professor Brand's disappearance, prompting officials to seal the base and review the conference-room footage.

Harry investigated Professor Brand's disappearance and learned that Brand had taken his Plan C team through a Spacetime Tunnel to join the Mutual Aid Society. Porter read Brand's letter and ordered everyone involved in Plan C branded as traitors and placed on the wanted list.

• Harry's subordinate reported that Professor Brand and his recruits had vanished through a black cloth they identified as a Spacetime Tunnel, while three witnesses had refused to join Plan C.
• Harry found Brand's letter and Chinese documents at the scene, then flew to Washington to report to Porter.
• Porter read Brand's letter, which explained that Plan C aimed to save humanity and North America and declared that Brand's group had joined the Mutual Aid Society.
• Porter ordered everyone who took part in Plan C listed as traitors and wanted, and instructed officials to inform their families of their crimes.

Porter ordered a cleanup of the NASA base while the sheriff told Cooper’s family that Cooper had committed treason and fled to Asia. In No. 4 Spacetime, Cooper learned the details of Plan C and became convinced it would save humanity, even if he and the others had to work hard to earn better conditions for North America.

• Porter ordered Harry to carry out the plan and clean up the NASA base after losing trust in its loyalty.
• The sheriff told Donald and Murphy that Cooper had supposedly committed treason and left North America, then searched the family’s belongings for Cooper’s personal effects.
• Cooper looked at a family photograph in No. 4 Spacetime and reflected on how much he missed his family.
• Professor Brand explained Plan C: the Mutual Aid Society would help humanity migrate through its Spacetime Tunnel to a habitable planet.
• Cooper learned that he and the others might have to do hard labor to contribute to the migration and secure better conditions for North America.

Cooper and Jody prepared to return to their spacetime through the tunnel beneath Moyulan Base, where Cooper met Jeff and learned about the refugees' devastated world. The chapter ended as scientists emerged from the elevator with unusual biological samples and Jody called everyone to board.

• Jody gathered Cooper and the others to leave Moyulan Base after their data had been backed up and Professor Brand had finished his discussions.
• Cooper met Jeff, a battered robot carrying a puppy, and became curious about his unusually human manner and intelligence.
• Jeff told Cooper he came from No. 5 Spacetime, a world devastated by solar storms, and that the Mutual Aid Society had rescued him and others from slavery and life as wanderers.
• Finch described North America in No. 5 Spacetime as a place of violent resource struggles and asked Cooper about the Golden Gate Bridge.
• Cooper said the bridge in his spacetime had been destroyed by enemy drones during global unrest, and Finch was disappointed.
• Scientists carrying glass containers of strange biological tissue emerged from the elevator as Jody called everyone to return to their spacetime.

Amelia, Professor Brand, and Cooper traveled through the Mutual Aid Society’s spacetime hub to No. 7 Spacetime, where Zhou Kun and Yi Yehua welcomed them and began organizing joint research. The chapter ended as Jody offered to help receive information sent by astronauts on the Lazarus missions.

• Mako Mori escorted Amelia’s and Jeff’s groups through No. 2 Spacetime’s guarded hub after their identities were verified.
• Professor Brand led Amelia’s group through the No. 7 Spacetime tunnel, while Mako Mori guided Jeff’s group toward No. 5 Spacetime.
• Cooper and the others emerged in a rocket assembly plant, passed another identity check, and met Zhou Kun and Yi Yehua.
• Cooper asked Amelia about the third rocket, and she explained that the Mutual Aid Society’s plan did not currently require it to carry people.
• Professor Brand, Zhou Kun, and Yi Yehua arranged to sort research materials and combine their teams’ work on black holes and wormholes.
• Jody offered to help receive information from the astronauts on the other side of the wormhole.

Zhou Kun assessed Cooper, Amelia, Doyle, and Romilly’s astronaut training and arranged for them to study at a space station in No. 3 Spacetime before carrying out their mission. The four thanked him, and Amelia looked around for Zhang Tianyuan, only to find he was not in the factory building.

• Jody offered to intercept and decrypt all signals sent back through the wormhole, and Zhou Kun agreed to provide the necessary equipment.
• Zhou Kun questioned Cooper, Amelia, Doyle, and Romilly about their training and reviewed their files and answers.
• Zhou Kun judged that the astronauts’ training was too basic for them to handle unexpected problems in space.
• Amelia asked whether they would be disqualified, and Zhou Kun said they would go to No. 3 Spacetime to train at its space station before returning for their mission.
• Cooper and the others thanked Zhou Kun, who told them to thank Zhang Tianyuan and Yuan Heguang and to train hard.
• Amelia searched for Zhang Tianyuan and discovered he was not in the factory building.

Zhang Tianyuan and the Mutual Aid Society's branch leaders debated rules for intervening when a spacetime's authorities failed to respond to a major disaster, prompted by North America's catastrophic deaths in The Day After Tomorrow Spacetime. After five days of disagreement, they drafted a new, restrictive proposal that still left room for maneuver.

• The Mutual Aid Society faced criticism over its inability to prevent more than a hundred million deaths in North America after Becker refused to act despite advance warnings.
• Branches submitted proposals for new rules governing intervention in future disasters, while some worried the rules could threaten their own autonomy.
• Zhang Tianyuan reviewed the proposals and found that the North America Branch of Pacific Rim Spacetime had not submitted one because Ning Jihua had blocked Taylor's radical plan.
• Representatives argued for five days, with Wandering Spacetime and Pacific Rim Spacetime favoring stronger intervention and other spacetimes resisting excessive force.
• The participants set aside the submitted proposals and drafted a new one with strict restrictions and room for maneuver.

The Mutual Aid Society approved a new charter establishing the Response Bureau and strict procedures for cross-spacetime disaster interventions. Amelia and her companions learned that the rules could be applied to North America in the Interstellar Spacetime and were told to form a branch and join the investigation.

• The Mutual Aid Society adopted a three-level response system and required independent investigations, unanimous approval, and consent from every branch in the assessed spacetime before intervention.
• Headquarters publicized the charter across the spacetimes and planned an open selection to recruit Response Bureau staff.
• Amelia received the news from Professor Brand and Jody and showed the charter to Cooper, Doyle, and Romilly.
• Amelia explained that Jody viewed the charter as a measured strategy, with level one and level two responses likely to be used most often.
• Jody told Amelia that her group had to establish the North America branch in No. 7 Spacetime and send representatives to the upcoming on-site investigation.

Amelia agreed to return to No. 7 Spacetime to represent the soon-to-be-established North America Branch in an on-site investigation, while Jack Hall settled into the Mutual Aid Society camp with his family as flooding and unrest spread through The Day After Tomorrow Spacetime. The chapter left Jack wondering what his son Sam could do now that university and study abroad were no longer options.

• Amelia said she would pause her spaceflight training and return to No. 7 Spacetime for the on-site investigation, since Plan B had been canceled and Jody needed to handle Lazarus mission information.
• Cooper agreed Amelia was the best choice, and Doyle and Romilly showed their support as Amelia worried about catching up on her coursework afterward.
• Jack Hall joined Liu Chunshi's Mutual Aid Society rescue team's meteorological group and brought his family and Laura to the safety of its camp.
• Armed unrest spread through officially administered camps as people in North America argued over the snowmelt disaster, but both sides avoided the Mutual Aid Society camp.
• Jack worried that Sam's education had stalled because universities and international study were no longer accessible.

Jack arranged for Sam and Laura to join the newly established Cross-Spacetime Special Major Disaster Response Bureau after hearing about it. The Bureau accepted them as public representatives and assigned them to help with its work.

• Jack and Sam both worried about Sam’s future because there were no universities available and Sam refused to study meteorology.
• After hearing an announcement about the new disaster-response agency, Jack called Liu Chunshi to ask whether Sam could join.
• Jack told Sam he was seeking a place for him, and Laura asked to be included because she wanted to join the Mutual Aid Society.
• Jack agreed to ask Liu Chunshi for a place for Laura as well.
• The next day, Liu Chunshi told Jack that the Response Bureau had accepted both Sam and Laura as young public representatives.

After Sam and Laura joined the Mutual Aid Society, Finch returned to his RV and decided to become a teacher to counter Father Jack’s religious influence among the survivors. The chapter left Finch and Jeff preparing to see the Golden Gate Bridge before pursuing their plans.

• Jack accepted the Mutual Aid Society’s terms, and Sam and Laura signed agreements to join the organization.
• After recovering, Finch returned to his RV with Goodyear and asked Jeff what he wanted to do once their journey was over.
• Finch explained that Goodyear was old and suggested Jeff join the Mutual Aid Society in the future.
• Finch told Jeff he wanted to become a teacher and encourage children to believe in science.
• Finch resolved to oppose Father Jack’s efforts to deify the Mutual Aid Society and shape the survivors’ society into a kingdom of God.

Zhang Tianyuan assembled a joint investigation team to respond quickly to the starvation crisis in North America in Interstellar Spacetime, while learning that Professor Brand’s group had ignored repeated attempts at contact. He sent other branch teams ahead and prepared the headquarters team to go directly to North America.

• Zhang Tianyuan appointed Instructor Yin, Bai Xu, Wu Yisi, and Mie Juan to the Response Bureau and selected Sam and Laura for its joint investigation team.
• The satellite department reported that the other side had ignored at least thirty-four rounds of messages and calls, so Zhang Tianyuan canceled further contact attempts.
• Zhang Tianyuan gathered the headquarters investigation team, including Instructor Yin, Wu Yisi, Mie Juan, Sam, Laura, and Amelia.
• Zhang Tianyuan had already sent six branch investigators through spacetime tunnels to the North American desert in Interstellar Spacetime.
• Wang Lei arrived with the CN003-01 Rescue Team, and Zhang Tianyuan asked him about conditions in North America in The Day After Tomorrow Spacetime.