What was the trauma that turned a demure middle class wife into a slum dwelling whore while the husband is away at work? Ryoko and Yuji appeared to be a normal couples. However, deep within their hearts, they harbored deep trauma. Ryoko spent her nights tormented by dissatisfaction with her unfulfilling sex life with the mama's boy Yuji, and by the resurfacing abnormal pleasure of an incident before their engagement. In the grimy streets at night, a prostitute who closely resembled Ryoko, with bright red lipstick and heavy makeup, appeared. She openly expressed her lust and spread her legs to all men. Kazuko, who had previously competed with Ryoko for Yuji's affections, swore revenge on Ryoko. While seducing Yuji, she had Nakata investigate Ryoko's conduct. As a result of the investigation, Kazuko uncovered the existence of a sexy prostitute who resembled Ryoko, and confronted her… A virtuous wife by day, a lustful prostitute seeking men by night.