On the surface, Riki Fudoh (Shôsuke Tanihara) appears to be a normal high school student. However, Fudoh is anything but average -- he's the disturbed son of a Yakuza mobster (Toru Minegishi) and is prone to acts of spectacular violence, just like his father. However, there's no love lost between the two. Fudoh, backed by his equally vicious gang of teen assassins, wants revenge for a murder committed 10 years earlier by his father. The school becomes a battleground for the family.