Charm confronts Owen, whom she no longer believes is Kiel, citing suspicious behavior: His personality has shifted, the ship’s cat avoids him, and a spell book is gnawing at his hand. She orders an identity scan, which confirms that Owen is biologically identical to Kiel except for a peanut allergy. Charm lowers her weapons, though she remains skeptical.

Owen reports the Magister’s clue: The Seventh Key is linked to the Original Computer. Charm agrees to proceed, deciding that their best option is to enter the Nalwork, Quanterium’s internal digital network. It requires a brain-stem data implant that Owen doesn’t have. She has the ship’s chair restrain him while robotic arms perform a quick surgical procedure. Once the implant is in place, Charm plugs in a data chip, and Owen’s world transforms into a glowing digital environment.

The narrative reveals that just before Bethany and Kiel jumped into the blank journal, Kiel used a teleportation spell that took them to another part of the town near Porterhouse’s home. Bethany confiscates his cloak and wand holster and lays out her plan: Return Kiel and the Magister to their book immediately and then rescue Owen. She dismisses Kiel’s counterproposal of fighting the Magister with science weapons.

As they walk through town, passersby repeatedly mistake Kiel for a costumed fan. A man in vintage clothing points out Porterhouse’s mansion in the distance and a nearby bookstore, Untitled Books. At the store, Bethany discovers that the sixth Kiel Gnomenfoot book—the only one that would return Kiel and the Magister to their proper timeline—is sold out. She sinks to the floor in defeat while Kiel reads gleefully from the first book. He tries to lift her spirits, but the conversation ends abruptly when a violent tremor shakes the store. An enormous black-and-silver tower rises from Porterhouse’s property. Kiel and Bethany recognize an exact replica of the Magister’s tower.

Owen and Charm enter the Nalwork as digital avatars, finding a chaotic, densely populated digital space. Because they’re wanted criminals, Charm communicates by passing Owen handwritten notes and warns him to stay completely silent. She expresses contempt for Quanterium’s citizens, who spend their days in the Nalwork while robots manage the physical world. They push through crowds toward transparent tubes that Charm identifies as their route to the Original Computer.

When a robot salesman begins shouting advertisements at Owen, he forgets Charm’s warning and responds aloud. The entire Nalwork falls silent, and a voice-recognition system identifies Owen as Kiel Gnomenfoot and flags Charm as a wanted war criminal. The transport tubes begin sealing one by one. Charm shoots a bystander’s camera, shoves Owen into the last open tube, and leaps in herself. They’re launched upward at tremendous speed.

The tower’s sudden appearance draws public attention and sends news vans racing toward Porterhouse’s property. A nearby man in a Hawaiian shirt photographs the tower, assuming it’s a promotion for a film adaptation of the book series. Bethany has Kiel cast a forget spell on him, but it fails because the tower is still visible. She demands that Kiel make it invisible. Though magic is far more exhausting in the real world, Kiel succeeds. He nearly collapses, but Bethany keeps him conscious by slapping him whenever he drifts and forces him to cast forget spells on every witness in town.

Charm and Owen arrive at the Original Computer, a primitive environment built entirely on binary code. Charm erects a firewall and begins hacking for the Seventh Key’s location, noting that Dr. Verity will strike Magisteria in under 24 hours. The computer’s records contain a striking claim: Magicians originally came from Quanterium, and the two worlds were once one planet. Charm dismisses it as corrupted data and presses on.

Owen notices glitches in the surrounding code. Charm identifies them as dormant computer viruses shaped like old Science Soldier robots—a trap left to protect the Seventh Key’s location. The viruses spread by touch, and since Owen and Charm exist as digital data, contact would overwrite their minds entirely. The robots begin battering the firewall.

Bethany half-carries the magically depleted Kiel to Porterhouse’s locked mansion gate, where he uses the last of his strength to open it. After passing through the invisibility spell concealing the tower, they find that the Magister has unleashed an array of creatures: two dragons, a giant emerging from the main doors, and goblins swarming the walls. Bethany realizes that the Magister is using her stolen power to pull characters directly from books. Kiel, still exhausted, prepares to confront the creatures, but before they can act, a dragon lurches forward and swallows him.

With the firewall deteriorating, Owen wills a spell e-book into existence, but his magical attacks are ineffective—a fireball passes through the robot viruses, and a healing spell only makes them grow taller. Charm downloads the First Magician’s last known location just before a virus breaches the firewall from inside, forcing them to retreat.

Out of options, Owen proposes casting a forgetting spell called Amnesty of Amnesia, reasoning that programs need memory to run and that erasing it might shut them down. Charm finds the logic questionable, but as the firewall collapses and the robots close in, she orders him to cast it. She steps in front of Owen to sacrifice herself to the robots, hoping to buy him a few extra seconds. After he casts it, the robots stall and then vanish one by one. Enormous letters appear above them, announcing that the computer is out of memory, indicating that the forgetting spell crashed the computer’s available memory and erased the viruses entirely.

Bethany barely processes Kiel’s disappearance into the dragon before she must dodge the remaining creatures. Then, Kiel forces his way out of the dragon’s jaws—slimy and irritated—noting that this marks the 43rd time he has been swallowed. New wands appear in his hands; he shrinks the dragon to the size of a mouse, binds another dragon with a spell, and rides it into the sky.

Bethany runs to the mansion library for usable books, finding the shelves nearly stripped bare—only Emma by Jane Austen and Jules Verne’s Twenty Thousand Leagues Under the Sea remain. When goblins flood the library, she beats them back with the hardcover of Emma and then thrusts her hand into Twenty Thousand Leagues, pulling blasts of seawater into the room that scatter most of the swarm. She finishes off the stragglers and heads back outside, where she finds that a giant has seized both Kiel and his dragon in one enormous fist.