Chapter Summaries

Su Hao’s group fought to stop Chi Lang from using the Sea Crown to complete his plan, while Manaphy endured its painful inheritance. Manaphy severed its connection to the Sea Crown, disabling its shield long enough for Zeraora to drag Chi Lang outside its range.

• Chi Lang used the Sea Crown’s energy to force Hisuian Garganacl into a final burst of strength, and Diancie shielded Milotic and Hisuian Braviary from its slashes.
• Milotic and Hisuian Braviary kept attacking until Hisuian Garganacl’s life energy ran out and it died.
• Su Hao used Aura to ask Manaphy if it could shut down the Sea Crown’s shield, and Manaphy decided to risk severing its inheritance.
• Manaphy cut its connection to the Sea Crown, briefly disabling its automatic defense and making the Water Shield vanish.
• Zeraora struck through the opening and dragged Chi Lang out of the Sea Crown’s range.

Su Hao rescued Manaphy and subdued Chi Lang, but the Sea Crown’s loss of energy and inheritor sent the Sea Temple into a rampage. As Su Hao tried to reclaim the Blue Orb, Mega Sharpedo tore off Chi Lang’s arm and escaped with it.

• Zeraora used Manaphy’s opening to pull Chi Lang away from the Sea Crown and pin him down.
• Su Hao treated the weakened Manaphy, which urged him to recover the Blue Orb from Chi Lang.
• The Sea Crown began flashing as the Sea Temple shook, and Reshiram warned Su Hao that the temple’s core had gone out of control.
• Su Hao had Zeraora restrain Chi Lang while he approached with Manaphy, intending to let Manaphy take the Blue Orb.
• Chi Lang laughed and declared that his cherished wish would be inherited before Su Hao sensed a powerful Aura approaching.
• Mega Sharpedo feinted at Zeraora, tore off Chi Lang’s right arm with the Blue Orb in its hand, and fled.

Mega Sharpedo escaped the Sea Temple with Chi Lang’s severed arm and the Blue Orb, triggering a catastrophic disturbance in Natural Energy. Su Hao found himself weighing a dangerous plan to reach the Sea Crown when Articuno’s tail feather signaled that Skadi and the others had arrived.

• Mega Sharpedo took Chi Lang’s arm and the Blue Orb and escaped despite Diancie’s attack, while Chi Lang revealed that Sharpedo had acted to fulfill his plan to awaken Kyogre.
• Su Hao left the dying Chi Lang behind, reassured Diancie, and asked her to check the Sea Temple’s surroundings while he dealt with Manaphy and the temple.
• The Sea Crown drew Natural Energy to keep the Sea Temple operating, unleashing tsunamis and storms that threatened the fleets and crews outside.
• Sharpedo’s Mega Evolution ended in the deep sea, and it continued toward Chi Lang’s coordinates to carry out his final wish.
• Su Hao learned that Reshiram could suppress the Natural Energy and let him approach the Sea Crown, but the plan risked harming Pokémon in the sea; Articuno’s tail feather then signaled Skadi and the others’ arrival.

Fourteen Articuno froze the international waters and stabilized the Natural Energy, allowing Su Hao to use the Water-type Plate Fragment to activate the Sea Crown and restore Manaphy. With Manaphy beginning its inheritance, Su Hao asked Reshiram for Blue Flare to burn the bloodied remains nearby.

• Chu Ya prepared to reach the nameless island and protect the warships, but Mega Gengar spotted fourteen Articuno appearing in the sky.
• The Articuno froze the rain, dark clouds, turbulent sea, and water spouts with Absolute Zero, calming the disaster across the international waters.
• Reshiram told Su Hao to bring Manaphy and the Water-type Plate Fragment to the Sea Crown while the Natural Energy stabilized.
• Su Hao placed the Plate Fragment on the Sea Crown, and it formed a Light Cocoon around Manaphy while repairing the crown and replenishing Manaphy's strength.
• Su Hao asked Reshiram to lend him Blue Flare so he could burn the bloodied remains nearby.

Su Hao and Diancie waited beneath the sea while Manaphy completed its Sea Crown inheritance and became a Class Two Legendary Pokémon. After learning Chi Lang had sent the Blue Orb toward Kyogre, Manaphy offered to handle its Uncle Kyogre, leaving Su Hao stunned.

• Su Hao followed the sinking Sea Temple into the deep sea and kept watch while Manaphy transformed.
• On April 17, Manaphy's Light Cocoon cracked, and it completed its inheritance as a Class Two Legendary Pokémon.
• Manaphy thanked Su Hao and Diancie, then returned the Water-type Plate Fragment to Su Hao.
• Su Hao told Manaphy that Chi Lang was dead and that one of his Pokémon had stolen the Blue Orb to take to Kyogre.
• Manaphy said it had a close relationship with Uncle Kyogre and offered to deal with it, surprising Su Hao.

Su Hao and Diancie prepared to leave the Sea Temple for the High Seas Secret Realms, while Manaphy decided to repay them with a special farewell gift. It revealed a dazzling underwater starry sky and a gathering of sea Pokémon, leaving the group entranced.

• Su Hao and Diancie told Manaphy they were leaving the Sea Temple to prepare for the High Seas Secret Realms and fulfill their promise to Articuno.
• Manaphy connected with the Sea Crown's Authority, set the Sea Temple to ascend invisibly, and joined Su Hao and Diancie.
• Manaphy considered how to repay Su Hao and decided to give him a special gift before his journey.
• At Manaphy's request, Su Hao released his Pokémon on the temple terrace, where they watched sea Pokémon create a brilliant underwater starry sky.
• A female Primarina sang among glowing bubbles as a giant Wishiwashi school swam around the Sea Temple, and Manaphy proudly presented the spectacle as its repayment.

Su Hao left the hidden Sea Temple with Hisuian Braviary and headed for the High Seas Secret Realm to find Lugia, troubled by conflicting messages from Lugia. Chu Ya learned he was safe, then discovered he had killed the New Star Organization’s Sea King, the Fifth Seat.

• Manaphy gave Su Hao the coordinates where Lugia had sent its call, and Su Hao comforted the nervous Hisuian Braviary before they left the Sea Temple.
• Su Hao and Hisuian Braviary flew toward the High Seas, where the frozen waters and the chaos after the Articuno attack offered a chance to enter the Secret Realm unnoticed.
• Su Hao wondered why Lugia’s call to Manaphy contradicted the Silver Feather’s message warning him not to come in.
• Su Hao received Chu Ya’s worried messages, reassured her that he was safe, and turned off his phone.
• While Chu Ya’s Pokémon worked to melt the ice trapping the fleet, she received Su Hao’s messages and learned he had killed the New Star Organization’s Sea King, the Fifth Seat.

Su Hao and Hisuian Braviary used a feather to enter the High Seas Secret Realm, only to find themselves submerged in a warm, tropical sea. They set out to locate Articuno and then Lugia, but a huge Water Spout erupted in front of them.

• Su Hao used Hisuian Braviary’s Silver Feather to enter the High Seas Secret Realm while the area was unattended.
• A pair of crimson eyes opened on an icy island after sensing the aura from the feather.
• Su Hao and Hisuian Braviary emerged underwater, and Hisuian Braviary used Confusion to carry them to the surface and dry itself.
• Su Hao recognized the tropical sea as resembling the setting of Pokémon the Movie 2000 and decided to find Articuno before searching for Lugia.
• A massive shadow rose beneath the sea and sent a huge Water Spout bursting toward Su Hao and Hisuian Braviary.

Su Hao and Hisuian Braviary met Lugia in the Secret Realm and traveled with it to Central Island. As Su Hao prepared to return the Silver Feather, he questioned Lugia’s identity and concluded that it was an impostor.

• Lugia emerged from the Water Spout, recognized the Silver Feather, and invited Su Hao and Hisuian Braviary to Central Island.
• Lugia asked what wish Su Hao wanted fulfilled, offering to teach Hisuian Braviary Aeroblast.
• Su Hao explained Hisuian Braviary’s ancient connection to Lugia and said they had come to return the Silver Feather and express their gratitude.
• Lugia agreed to take back the Silver Feather, but Su Hao paused after asking about Arceus and hearing that it had been gravely injured and its Plates had vanished.
• Su Hao lowered the Silver Feather and asked Lugia who it really was.

Su Hao exposed the false Lugia as Dark Lugia, which revealed its identity and attacked him and Hisuian Braviary. Articuno arrived to save them, and Zapdos and Moltres joined the battle, leaving Articuno to carry Su Hao away.

• Su Hao questioned Lugia's story, and Dark Lugia revealed itself and threatened Su Hao and Hisuian Braviary.
• Dark Lugia immobilized them with Intimidate and prepared a Dark Pulse, but Articuno arrived and blocked the attack with an Ice Wall.
• Dark Lugia broke through Articuno's Ice Wall, and Zapdos and Moltres descended to fight it.
• Articuno told Su Hao to climb onto its back and carried him away while Zapdos and Moltres held Dark Lugia off.

Articuno rescued Su Hao from Dark Lugia and brought him to Ice Island, where they discussed his recent adventures while waiting for Moltres and Zapdos. The two Legendary Birds arrived with a small, curious Lugia, as Articuno prepared to explain what was happening with Dark Lugia.

• Articuno carried Su Hao away from Dark Lugia, which destroyed the central island in a furious storm.
• Articuno flew Su Hao to Ice Island and explained that it had followed the aura of its tail feather.
• Su Hao asked Articuno about Dark Lugia, but Articuno said they would wait for Moltres and Zapdos to return with a child.
• Articuno heard about Su Hao's Pokémon and recent adventures, then noticed Reshiram's formidable presence.
• Moltres and Zapdos arrived with a small Lugia, which curiously looked over Su Hao and his Pokémon.

Su Hao met Little Lugia on Ice Island and watched it bond with his Pokémon while Moltres and Zapdos fought overhead. Articuno then gathered Su Hao, Reshiram, and Diancie to discuss a plan against Dark Lugia.

• Su Hao discovered that the newly arrived Lugia was a small, weak Little Lugia, while Moltres and Zapdos resumed bickering and began fighting in the sky.
• Articuno introduced Little Lugia to Su Hao, who offered it an Energy Cube and quickly earned its trust.
• Ogerpon and the other Pokémon played with Little Lugia while Articuno sent Moltres and Zapdos away from Ice Island to fight elsewhere.
• Articuno invited Reshiram to join a discussion about Dark Lugia and asked Su Hao to bring Diancie because the plan would require its Radiant Power.

Articuno explained that Lugia had imprisoned itself in a vast Secret Realm to contain its dark side, which grew dominant after Lugia sacrificed its mental strength to protect its child. Dark Lugia now sought a way out, while Articuno and the other guardians raised Little Lugia on three protected islands.

• Articuno told Su Hao and Diancie that Little Lugia was the Sea God's descendant and that the Sea God was Dark Lugia.
• Articuno revealed that Azelf had arranged for it to stay behind during Su Hao's first Trial and sent it to investigate the Secret Realm with Moltres and Zapdos.
• Articuno explained that Lugia's Secret Realm was a cage with an exit that required a pure body, which made Dark Lugia seek Su Hao's Silver Feather.
• Articuno said the war against Dark Matter had awakened a dark personality in Lugia, and Lugia had trapped itself to suppress that side.
• Articuno revealed that Lugia's dark side gained control after Lugia's child was born and it tried to protect Little Lugia from its own negative energy.
• Articuno said Dark Lugia was trying to escape while the guardians raised Little Lugia on three islands it could not enter.

Articuno explained that Dark Lugia was destabilizing the Secret Realm to escape, and outlined a plan to merge three Secret Realms and seal it while Diancie’s Radiant Power purified its corruption. Reshiram volunteered to help hold Dark Lugia back as the group waited for the other clans’ Secret Realms to arrive.

• Articuno warned Su Hao and Reshiram that Dark Lugia’s storms were weakening the Secret Realm and could eventually let it escape into the main world.
• Diancie offered to help save Lugia, and Articuno said its Radiant Power would be used to purify Dark Lugia within a prepared seal.
• Articuno explained that the operation, named the “Seal Plan,” would suppress Dark Lugia while its negative energy was gradually purified.
• Articuno said they would begin once the clans of Moltres and Zapdos arrived with their Secret Realms, so the three Secret Realms could be merged.
• Articuno said it would have to remain behind to guard the seal, and Su Hao accepted that it could not continue traveling with him.
• Reshiram vowed to help suppress Dark Lugia, leaving Articuno uneasy about its sudden eagerness.

Moltres and Zapdos doted on Little Lugia, while Su Hao learned more about the islands’ defenses against Dark Lugia. Incineroar persuaded Su Hao to take it to Fire Island to learn Life Fire, and Su Hao realized Zapdos might also be able to train Zeraora.

• Moltres and Zapdos competed to hug Little Lugia until it calmed them by saying it liked them both.
• Articuno told Su Hao that the three islands were Lugia’s contingency plan and showed him the Storm Wall protecting them from Dark Lugia.
• Incineroar asked Su Hao to take it and Little Lugia to Fire Island so Moltres could teach it Life Fire.
• Little Lugia pleaded on Incineroar’s behalf, and Su Hao agreed to take them to Fire Island.
• Su Hao realized Zapdos might be able to guide Zeraora and help it resonate with the Thunder Stone Slab Fragment.

Su Hao brought Incineroar and Little Lugia to Fire Island, where Moltres agreed to train Incineroar in Life Fire. After Su Hao offered it three spheres of Life Energy, Moltres promised to help Incineroar grow stronger before the operation began.

• Su Hao rode Hisuian Braviary to Fire Island with Little Lugia and released Incineroar at the volcano’s crater.
• Moltres emerged from the lava and greeted Little Lugia, who introduced Incineroar and asked Moltres to teach it Life Fire.
• Moltres accepted Incineroar as a temporary disciple because Little Lugia had asked, and Little Lugia hugged it in excitement.
• Su Hao gave Moltres three spheres of Life Energy, asking it to use one to heal Incineroar’s injuries.
• Moltres kept all three spheres, promised to train Incineroar strictly and help it break through its current level, and told Su Hao to take Little Lugia away from the crater.

Su Hao brought Zeraora to Thunder Island to ask Zapdos to teach it how to use lightning, but Zapdos refused until it saw Zeraora's Golden Broken Stone Tablet. Zapdos then eagerly begged Su Hao to leave Zeraora in its care.

• Su Hao returned Little Lugia to Ice Island and found the Pokémon there training or preparing for the operation against Dark Lugia.
• Su Hao flew with Zeraora and Hisuian Braviary to Thunder Island and used Reshiram's Blue Flare to draw Zapdos out of the storm clouds.
• Su Hao asked Zapdos to train Zeraora, but Zapdos refused, claiming it had no time before the Imprison operation.
• Su Hao had Zeraora reveal a Golden Broken Stone Tablet, causing Zapdos to plead with him to leave Zeraora in its care.

Zapdos agreed to train Zeraora and borrow the Thunder Stone Slab Fragment, while Su Hao and Articuno assessed Diancie's hidden power and planned to seek the Island Guardians. A week later, Su Hao visited Fire Island to check on Incineroar's training, where Moltres complained about a debt for teaching.

• Zapdos explained the Thunder Stone Slab Fragment's power, agreed to teach Zeraora for a week, and asked Su Hao to lend it the fragment so Zapdos could try to activate it.
• Su Hao agreed, and Zeraora handed the fragment to Zapdos before beginning solitary training.
• Articuno and Reshiram concluded that Diancie held immense power linked to the Radiant God, so Su Hao and Diancie decided they would later seek the four Island Guardians for guidance.
• A week later, Articuno told Su Hao that the Moltres and Zapdos clans' Secret Realms were nearing the area and that Zeraora and Incineroar had nearly finished training.
• Su Hao rode Articuno to Fire Island, where Moltres complained that Incineroar only needed to avoid revealing its master's name as payment for teaching.

Su Hao saw Incineroar demonstrate its powerful new Magnetic Field Manipulation: Nascent Form, which combined compressed Fire Energy with lightning but caused it to explode from an energy imbalance. Reshiram explained the problem, and Moltres treated Incineroar as Su Hao considered how it could learn to control magma energy.

• Moltres asked Incineroar to show Su Hao and the others what it had learned during training.
• Incineroar used Magnetic Field Manipulation: Nascent Form to destroy a massive boulder with one punch.
• Moltres explained that Incineroar had poor compatibility with Life Fire but could use compressed Fire Energy to imitate magma energy.
• Incineroar exploded after its attack and suffered wounds from the energy rampage.
• Reshiram explained that the compressed Fire Energy disrupted the balance between Incineroar's fire and lightning, and recommended that it improve its control over magma energy.

Su Hao and Articuno traveled to Thunder Island to collect Zeraora and found that Zapdos had trained it to control its lightning far more precisely. Zeraora showed off its activated Thunder Stone Slab Fragment and new abilities, leaving Su Hao eager to see how much stronger it would become.

• Su Hao and Articuno approached Zapdos through a sea of lightning, and Articuno sensed that Zapdos had grown stronger than it and Moltres.
• Zapdos sent Zeraora racing through the storm to greet Su Hao, and Zeraora appeared before him cloaked in lightning with an aura at the Mid Gym Level.
• Zapdos praised Zeraora’s talent and unique blue lightning, and Su Hao explained that he had found Zeraora and the Thunder Stone Slab Fragment in the same sealed ruins.
• Zeraora showed Su Hao that the Thunder Stone Slab Fragment had activated, and Zapdos urged it to keep exploring the fragment’s mysteries.
• Zeraora demonstrated that it could focus Plasma Bolt Punch on a single point and was nearing side-effect-free Magnetic Field Manipulation.