The Akihabara Festival, a major government-backed event, is about to begin. As everyone works hard to prepare, behind the scenes, an unknown group conducts unspeakably evil deeds to ruin the fun.

The cultural cleansing of Akiba is turning into something more closely resembling an ethnic cleansing operation, and Akiba residents are being rounded up by the police. Can Matome and Tamotsu defeat the mastermind and save the day?