To spite a husband who cares only about work and neglects their home, Yuna secretly begins an affair with his secretary, Oki. As she seeks ever stronger thrills, she cannot forget the bondage techniques her BDSM-loving lover taught her. Though she swears it will be the last time, she offers him her body again and is tightly bound in hemp rope. The pain and pressure gripping her entire body transform into a new kind of pleasure, and she loses herself in the exquisite ecstasy of suffering.