One day, Ayu notices that the Ooki family next door, whose husband and wife have been constantly fighting, are preparing to move, and volunteers to help them tidy up. She can't just leave Ooki, who seems like a nice person, alone. However, for Ooki, who is now lonely after his wife runs away, Ayu's kindness only arouses his desire. Ooki ends up pushing down the unsuspecting Ayu. Ayu, who is disgusted by her husband, accepts him, and the two begin to secretly engage in sexual acts right next to her husband...