Kuin continues to sow chaos, this time by launching an out-of-control bus into the streets. Lack of luck, this is the vehicle that Koichi had borrowed to take his mother to visit the city! The Idaten team quickly manages to evacuate all the passengers, except one: Makoto, a friend of the student who investigates the vigilantes... Fortunately, The Crawler manages to save her by a narrow margin, even if he is forced to reveal her true identity. The person responsible for the troubles, she, is still running... but perhaps more for a long time. Indeed, Knuckle Duster is on her track, and he is not close to letting go!