Chapter Summaries

Chloe explained how Theus’s improved cement made concrete, while Kyle and Hodge marveled at the knowledge freely shared in Castel compared with Rhine. She then found Monica conducting an experiment with a Steam Engine and Silly.

• Chloe told Kyle and Hodge that volcanic ash improved Rhine cement so it could set underwater, and explained how cement, sand, gravel, blast-furnace slag, and rebar made concrete.
• Kyle and Hodge discussed how Castel openly taught industrial processes, unlike Rhine, where workers were told to memorize procedures and pray at the Mechanical Cathedral.
• Chloe reflected on managing the Eastern Experimental Field and on Theus’s remarkable inventions as she walked through the factory grounds.
• Chloe entered a secluded factory guarded by banshees and found Monica conducting an experiment.
• Monica insisted she had permission and pointed to the Steam Engine, saying she was with Silly.

Chloe and Monica tried the Mechanical Cathedral’s ritual to communicate with the Type II Engine’s Machine Soul, with Gaia reluctantly joining them. As the ritual drew a growing crowd, Chloe called on the soul within the steel to awaken.

• Chloe told Monica about the Mechanical Cathedral, an organization that worshipped machinery and performed elaborate rituals.
• Chloe and Monica dragged Gaia to the Type II Engine and persuaded her to take part in their ritual.
• Banshees and Moth Chasing Flame members gathered outside the room, and the guards sent word to the lord.
• Gaia greased the engine’s bearings while Monica performed ritual gestures and Chloe recited a prayer before the watching crowd.
• Chloe raised her voice and called for the Machine Soul to awaken.

Chloe, Monica, and Gaia successfully communicated with the steam engine’s machine soul, Silly, using a Mechanical Cathedral ritual. Theus congratulated them, warned them to report future experiments, and they proposed testing how Silly reacted to Pollution.

• Chloe used a Mechanical Cathedral prayer while Monica shielded Gaia from coals, and the steam engine started as Silly responded to them.
• Monica clung to the boiler and cried with joy, while Gaia, Chloe, Theus, and the gathered spectators celebrated their success.
• Theus asked about the ritual, and Chloe explained the Mechanical Cathedral’s ties to her group and the royal family.
• Theus reprimanded Monica, Gaia, and Chloe for their dangerous experiments and told them to report future tests to him or the banshee on duty.
• Chloe said the Mechanical Cathedral had no Machine Souls of its own, then suggested giving Silly Pollution to burn.

Theus and the Banshees tested using solid Pollution as fuel, with Monica guiding it into a Steam Engine through her connection to its Machine Soul. The engine burned Pollution successfully, but Theus realized the presence inside it was not Silly.

• Theus learned that the coal shipment had fallen through and considered Pollution as an alternative fuel.
• The Banshees brought Pollution to the testing grounds, and Monica prepared to communicate with the Steam Engine's Machine Soul.
• Monica poured Pollution into the boiler, where it entered the flames without resisting and made the Steam Engine run far more powerfully than before.
• Theus tried to contact the Machine Soul and sensed an unfamiliar presence instead of Silly.
• Theus demanded to know who the presence was and declared that it was not Silly.

Theus and Chloe realized the Steam Engine had answered their ritual with the endless whispers of an evil god rather than the quiet Machine Soul Silly. They suspected the entity was controlled and possibly not physically present, but the chapter left them questioning whether the Mechanical Cathedral’s prayer had unknowingly summoned it.

• Theus sensed that the Steam Engine’s voice was unlike Silly’s and questioned Monica about how she had communicated with it.
• Monica described hearing an unclear whisper from the moment she touched the machine, and Chloe concluded that it sounded like an evil god.
• Chloe argued that the entity was likely controlled because the Steam Engine had operated steadily, and she reassured the others that it was probably not too dangerous.
• Theus’s reinforcements arrived and watched Monica, Gaia, and Chloe warily as the group considered whether the evil god had been summoned into the machine.
• Theus questioned the wording of the Mechanical Cathedral’s prayer, and Chloe explained that a true summoning ritual required a vessel, a Transcendent sacrifice, a directed prayer, and enough people.

Chloe’s improvised Mechanical Cathedral ritual summoned a hostile presence into the steam engine, but Theus purified it and Silly’s Machine Soul returned. Chloe then wondered whether the Cathedral’s steam engines burned something other than mortal fire.

• Chloe insisted her prayers and procedures could not have summoned an evil god, but the steam engine roared and shrieked in response.
• Monica panicked over Silly’s disappearance, and Theus approached the engine under Flesh Magic protection to investigate.
• Theus connected with the presence inside the engine and purified it, after which Silly’s Machine Soul regained control of the boiler.
• Monica hugged the steam engine and apologized to Silly, while Chloe cautiously sensed the Machine Soul beneath its steel casing.
• Chloe recalled the Mechanical Cathedral’s question, “How could steam be profaned by mortal fire?” and asked what its engines were burning.

Theus learned that Chloe had joined the Mechanical Society, an academic organization that had grown into the conservative Mechanical Cathedral, whose Transcendent members worshipped machines. Gaia proposed testing whether a summoned Machine Soul had caused the Cathedral’s ritual to mutate, and Theus asked if that was her theory.

• Theus questioned whether the Mechanical Cathedral had Transcendents, and Chloe revealed that she was one of them.
• Chloe explained that the Mechanical Cathedral was originally the open, knowledge-sharing Mechanical Society, which had become increasingly conservative after the Great Sage Bruno disappeared.
• Chloe said the Cathedral’s strict rules and opposition to interpreting technology had developed over time, while its older members avoided Transcendence in their technology.
• Gaia suggested repeating the Cathedral’s ritual with an ordinary Steam Engine that had never summoned a Machine Soul.
• Theus and Chloe realized Gaia suspected the Machine Soul had caused the ritual to mutate, and Theus asked if that was her theory.

Theus tested whether the Mechanical Cathedral’s ritual required a Machine Soul, and the ritual succeeded when Monica summoned one into a steam engine. Theus decided to observe the engine, hoping it could burn pollution and help Castel’s fuel shortage.

• Gaia reluctantly joined Chloe and Monica in repeating the Mechanical Cathedral’s ritual on a new Type II Engine, but the engine did not ignite.
• Theus asked Monica to summon a Machine Soul into the engine, and she agreed eagerly.
• After Monica summoned the Machine Soul, Chloe, Gaia, and Monica performed the ritual again, and the engine ignited and formed a connection with them.
• Chloe sensed that the presence was only a projection dwelling through the Machine Soul, not a fully descended evil god, and said its whispers caused no pollution.
• Monica poured pollution into the burning engine, and Theus decided to leave it under observation because Castel needed fuel.

Theus named the pollution-burning steam engine the Clamorer and organized Castel’s war preparations against the sea urchins and polluted long serpent. Chloe then reported that Castel had lost contact with the outside world through the Candlelight Society’s channel.

• Theus and the banshees agreed to test the Clamorer on pollution, while Moth Chasing Flame supported the experiment and suggested giving the machine a new name.
• Theus planned an underground tunnel network called the Webway Plan to connect Castel’s defenses and prepare for battle on land.
• Theus accelerated Castel’s mobilization, recruiting and training soldiers while factories converted to steam power and fortifications began rising.
• Una led the banshees in building strong fortifications at the Eastern Test Site using Turn Stone to Mud and rebar.
• Chloe visited Theus and told him that the Candlelight Society’s contact channel had stopped responding and Castel had lost contact with the outside world.

Beatrice asked a Candlelight Society priest to explain why Castel’s beacon had disappeared into the Sea of Unconsciousness. The priest revealed that the Sea and the Corridor of Truth were different ways of perceiving the same place, then began explaining why anchors were needed to navigate it.

• Beatrice waited while a priest searched the Sea of Unconsciousness for Castel’s anchor, but he reported that Castel’s beacon had vanished.
• The priest explained that secret knowledge caused Pollution and described the Candlelight Society’s belief that it would one day cast all Pollution into the Sea.
• Beatrice asked whether she could explore the Sea, and the priest said that different churches called the same place the Sea of Unconsciousness, the Corridor of Truth, the Land of Eternal Sleep, or Night Country.
• Beatrice connected the Sea’s shifting forms to Cognitive Interference and asked whether it caused Pollution to flood into reality, but the priest said its cause was a taboo.
• The priest began explaining that explorers needed anchors because the Sea of Unconsciousness had no fixed form or direction.

Beatrice learned that the Church’s Mind Whisperers used anchor points to navigate and communicate through the Sea of Unconsciousness, and that an anchor could vanish if an existence swallowed it. After returning to Rhine, she sought refuge in a hidden apartment where she could briefly relax away from the pressures of her new life.

• The priest explained that a powerful belief could serve as an Anchor in the Sea of Unconsciousness, and Beatrice considered her own belief.
• The priest described how Church anchor points let Mind Whisperers travel between churches, despite the dangerous journeys that shortened their lives.
• Beatrice asked what could make an anchor point unreachable, and the priest said an existence could swallow it.
• Beatrice returned to Rhine and reflected on how she was learning to navigate the city’s competing interests and upper circles.
• Beatrice entered a secluded Joan Family apartment, drew the curtains, and relaxed on its sofa.

Beatrice tried to contact Castel and learned that it had lost contact, then decided to search for its beacon in the Corridor of Truth. She entered the Corridor and found herself in a long passage lined with doors.

• Beatrice wrote a letter about Rhine and her soap, but the Church could not deliver it to remote Castel.
• Beatrice learned that Castel had lost contact and persuaded the Church to help her enter the Sea of Unconsciousness, though it would not send Investigators.
• Beatrice thanked the priest Michel, told him to call her Joan, and resolved to look for Castel's beacon and speak with Count Theus.
• Beatrice used her Investigator ability and heard that reality had no high walls, then felt Pollution spread through her body.
• Beatrice found herself standing in a long corridor lined with countless doors.

Chloe revealed that the church on Castel Island contained a Guardian Inscription and proposed modifying it to protect the entire island. Theus learned that it could strengthen structures and block Pollution, and he considered the inscription a valuable addition to their defenses.

• Chloe showed Theus the Guardian Inscription she had discovered inside the old church.
• Theus questioned its usefulness, and Chloe explained that she could modify it and expand its protection across Castel Island if they supplied additional power.
• Chloe said the inscription could strengthen buildings against impacts and block Pollution.
• Theus recognized that the inscription could help protect their fortifications from the sea urchins and agreed it was useful.
• Theus wondered why the Candlelight Society had placed Guardian Inscriptions in every church and whether people had once needed them as shelters.

Theus and Chloe planned to expand Castel’s church and power its protective inscriptions with burning pollution, but Theus raised concerns about cooling the underground furnace. As Chloe warned that altering the inscriptions could attract the Candlelight Society’s attention, Theus asked what the rebuilt church would worship.

• Chloe explained that the protective inscriptions needed fuel and might help purify pollution, while Theus planned an underground furnace to power them.
• Theus pointed out that the furnace would be difficult to cool underground and proposed redesigning its materials and cooling system, possibly with underground waterways.
• Chloe warned that modifying the inscriptions would disturb the Sea of Unconsciousness and might alert the Candlelight Society, whose anchor had been cut off from outside contact.
• Theus ordered construction crews to prioritize rebuilding the church and expanding its coastal defenses, while Chloe agreed to modify the inscriptions and send him the furnace design.
• Theus asked Chloe whether the new church would still worship the Candlelight Society, and Chloe wondered if he wanted to found a new church.

Theus and Chloe discussed expanding a church across Castel while avoiding the Candlelight Society’s notice and limiting the influence of traditional faith. Theus named his planned academic organization Empire Truth, while the modified anchor point could later help Castel explore the Sea of Unconsciousness.

• Theus rejected establishing a new church because he feared faith could encourage blind obedience and extremism.
• Chloe explained that the expanded church had to remain recognizable as a church so its protective inscriptions and Cognitive Interference would continue to work.
• Chloe said her modifications had altered the Candlelight Society’s anchor point, making it unrecognizable to them, and suggested they could keep it for future exploration of the Sea of Unconsciousness.
• Theus proposed turning the church into an academic organization that spread knowledge under the guise of teaching scripture and doctrine.
• Theus named the planned faith Empire Truth.

Alexei inspected the Paternoster Elevator and discussed the use of Clamorers in factories with Una. Una told him that Theus had ordered construction on the surface fortifications to pause so the church could be expanded, and Theus arrived as Alexei reacted in surprise.

• Alexei examined a Clamorer powering the Paternoster Elevator and asked Una whether such machines would be used in factories.
• Una explained that Clamorers were stable and that the Spirit of Steel inside them helped maintain the engines.
• Alexei asked whether Una had summoned him to discuss connecting the underground passageways with the surface fortifications.
• Una told Alexei that Theus had ordered him to pause surface fortification work and expand the church first.
• Una pointed out Theus arriving at a lower platform.

Theus reorganized Castel’s defenses around an expanded church that would serve as a fortification and center for the underground webways. He founded a new institution called Empire Truth and assigned Chloe and Alexei to write its Holy Scripture, leaving Alexei startled by the task.

• Theus explained to Alexei that guardian inscriptions could turn the expanded church into a new kind of fortification.
• Theus assigned Alexei to expand the church aboveground, Chloe to modify the guardian inscriptions and build the energy core, and Una to revise the underground webways.
• Chloe said the Candlelight Society’s former believers would not object, and Theus decided the new church would be called Empire Truth.
• Theus asked Chloe to write a Holy Scripture, but she explained that her group rejected scripture in favor of knowledge.
• Theus told Alexei and Chloe to write the scripture together using material from Alexei’s infantry manuals, and Alexei was taken aback.

Castel’s new Empire Truth Church recruited its first fifty believers, who were actually soldiers, after Zoe explained the organization to the islanders. Theus planned to expand the force while limiting it to three hundred, and considered whether to reveal the Banshees to help with construction.

• Islanders learned about Empire Truth through city notices, and Zoe explained at night school that its believers were soldiers and no one had to hold religious beliefs.
• After Zoe’s explanation spread, the first fifty recruits signed up for Empire Truth, and Theus ordered Alexei to train them and speed up recruitment.
• Theus set a limit of three hundred soldiers because Castel needed its people for industrial production and had fewer than ten thousand residents.
• Alexei reported that construction crew recruitment was struggling because workers preferred stable factory jobs, while Theus noted that cement production limited construction.
• Theus considered using the surplus Banshee workers above ground, despite the risk of revealing their existence.

Castel’s residents gathered around a statue of Nini commemorating her battle against Sea Urchin Monsters, and Zoe used the unveiling to teach them about Banshees and explosives. She explained that factory-made Nitroglycerin, not magic alone, had helped defeat the monsters, leaving the crowd amazed by the workers’ role.

• Castel residents gathered outside the school to see a statue depicting Nini facing a Sea Urchin Monster with bombs.
• The crowd read the inscription describing Nini’s inventions, work on the Type II Engine, and fight against the monsters.
• Zoe came out of the school and explained the Banshees, the Sea Urchin Monsters, and Nini’s deeds.
• When residents compared bombs to captured lightning, Zoe corrected them and explained that explosives were made from Nitroglycerin produced in Castel.
• Zoe told the crowd that factory workers’ explosives had killed the Sea Urchin Monsters, and the residents reacted with astonishment.

After mortals killed a sea urchin monster with their own explosives, Castel’s people began to see the Banshees—and Nini’s contribution to their food—as closer to their lives. Meanwhile, Theus and Alexei remained unable to contact two groups sent to Gem Bay, and Theus suspected a major disaster had struck the pirates.

• Castel’s people saw the slain sea urchin monster and learned that mortals’ bombs had killed it, changing how they viewed the Banshees.
• People discovered that Nini had improved the Fish-Herding Spell and used it to provide food for Castel, leading some to pray at her statue.
• Theus told Zoe that Nini deserved a statue because she helped people eat their fill, and Zoe resolved to learn more about the common people’s lives.
• Alexei reported that neither the first mate’s party nor a second group sent to Gem Bay had returned or made contact.
• Theus and Alexei considered whether the pirates had detained the missing sailors, and Theus wondered if sea urchins and Pollution serpents had wiped out Gem Bay.