An ex-mercenary is forced out of isolation when three mysterious men kidnap and brainwash the city's children afflicted with the Geostigma disease.

When the riot squad starts shooting citizens during the holiday season, the Major and her team must track down a terrorist hacker who operates under the name Fire-Starter.

Motoko and Batou work to try to stop a terrorist organization whose symbol is the Scylla. Meanwhile, Togusa investigates a murder of a man who possessed a prosthetic leg manufactured by the Mermaid's Leg corporation.