Coworkers Eri Takigawa and Yoshioka enjoy drinking together after work. Finding themselves still thirsty, they decide to continue drinking at Takigawa's place. Despite the late hour, Yoshioka feels drawn to Takigawa's wife, Eri, who kindly prepares drinks for them. However, after too much alcohol, an argument erupts between Yoshioka and Takigawa over work matters, leaving Yoshioka unsettled even after the tension fades. Seeking comfort, he turns to Eri, desiring a special night with her...