Yoshioka and his coworker Takikawa stop for drinks after work. Still not satisfied, they continue drinking at Takikawa’s house. Despite the late hour, Takikawa’s busty wife Eri prepares more drinks and snacks, and Yoshioka becomes attracted to her. Too much alcohol leads him into an argument with Takikawa over work. Things eventually settle down, but Yoshioka is still furious and, out of spite, sneaks into Eri’s room at night to make a sexual advance...