A.I.C.O.

Two years after the mysterious Burst that killed her family, Aiko has nearly learned to walk again, but a transfer student's arrival upends her life.

Kanzaki takes Aiko to the Town, where her father's old colleague Kurose tells her the unbelievable: her brain was transplanted into an artificial body.

The CAAC detains Aiko and Yuya, but the Divers manage to break them out; though the Matter is active again, the group plans to head to Primary Point.

The group clears the Gate just as the government orders an evacuation; their first target is the Guillotine Shutter at K1, but the Matter is active.

Inside the Area, the group rests and replenishes supplies at the camp; Nanbara gets a ride from Kurose, but she and Isazu appear to have their own plans.

Kaede's showing off delays the group's progress to point K2, which they must reach before sunrise to enter Area Three; Isazu tells Kurose what he did.