Shigemitsu Kamio, a member of a Shibuya color-gang who is respected even by other chīmers (delinquents), carries the bitter secret of having killed his own father. One day, his childhood friend Ei-mei Sai suddenly appears before him. Acting on orders from Wang, the boss of the Chinese mafia, Ei-mei has come to lay the groundwork for their expansion into Shibuya…