Riki Fudoh (Shosuke Tanihara) is a high school student juggling academic work with a secret life operating as an underworld boss. As the leader of a group of larger than life, school-age assassins, Fudoh is waging a campaign of violence against the entire criminal underworld, as part of a revenge plot against his own father (Toru Minegishi), a high-ranking Yakuza in his own right who was forced to murder Fudoh's brother. Originally planned for release as a direct-to-video V-cinema title, Fudoh was granted a theatrical release after producers viewed the film, leading to it becoming a festival favourite around the world, and establishing Miike on the world stage as one of film's great provocateurs and a key figure in 'extreme' cinema.