Keiko Yukawa is a former prostitute and the newest inmate at White Lily, a female rehabilitation facility.

A bad day gets worse for young detective Murakami when a pickpocket steals his gun on a hot, crowded bus. Desperate to right the wrong, he goes undercover, scavenging Tokyo’s sweltering streets for the stray dog whose desperation has led him to a life of crime. With each step, cop and criminal’s lives become more intertwined and the investigation becomes an examination of Murakami’s own dark side.

In post-war Japan, Michiko, a disillusioned young woman trapped in a loveless marriage, confides in her younger cousin, Tsutomo, and the two become close, but decide not to consummate their affair. He instead becomes involved with the flirtatious Tomiko, who is also conducting an affair with Michiko's husband. When Michiko finds that her husband has abandoned her, she decides to take her fate into her own hands.

University students Sudo and Mori make money by picking up rich girls in dance clubs and conning them into giving them cash. Mori is the brains of the operation, and Sudo is the suave dancer who picks up the girls. Sudo becomes gradually involved with three different girls and is drawn into the gangster milieu, which he seems unable to resist even though he is responsible for his mother, grandmother, and sister Masako. In this world of bad boys and girls, Masako is the pillar of strength and moral virtue who finally enables Mori to straighten out.