Shinji and Masaru spend most of their school days harassing fellow classmates and playing pranks. They drop out and Shinji becomes a small-time boxer, while Masaru joins up with a local yakuza gang. However, the world is a tough place.

1989 film by Takeshi Kitano

A seemingly unremarkable man called “Mouse” is caught by the police. In exchange for his freedom, he goes undercover, infiltrates a drug ring, and arranges a fake deal, but an unexpected turn of events occurs... Director Takeshi Kitano presents a two-part film: a serious yakuza action and a self-parodying comedy of the same story. What is the fate of "Mouse"?