Iwabuchi of the Metropolitan Police Department's Investigation Division cooperates with Kubo of the Foreign Affairs Division in re-investigating the case of a foreign drug addict's death at the request of Kubo.

Patronized by a gang ruling the city, Mako delinquently plays around a night club every night with her bad company. One night, a guy Hideo gets closer to her for one-night stand, and they consequently fall in love. However, Hideo is killed by the gang. Mako swears vengeance on her beloved's murderer.