Intrepid tax investigator Ryoko Itakura sets her sights on the mysterious and philandering Hideki Gondo, a suspected millionaire and proprietor of a thriving chain of seedy hourly hotels, who has for years succeeded at hiding the true extent of his assets from the Japanese authorities. Itakura and Gondo soon find themselves engaged in a complicated, satirical battle of wits.
Mayo, the Black Angel, is ordered to assassinate a powerful syndicate leader. The hit goes awry, however, as the crime boss' bodyguard steps in the way. It's none other than Yamambe, who once rescued Mayo from a rape and has lived in her heart since then.
An undercover narcotics officer is killed, and after his funeral some yakuza break into his apartment and rape his wife, Nami, while looking for the drugs they claim he stole from them. Afterwards Nami attempts to commit suicide, but after being rescued by a mysterious yakuza she decides to infiltrate the gang and get revenge.
