An wins a trip to a hot spring in the shopping district lottery. She goes on a hot spring trip with her son Yosuke, who works in Tokyo, without telling her husband. Anzu is actually cheating on her husband and is thinking of divorcing her. The reason why he went on a trip with her son without telling her husband was because he wanted to sort out her various worries... Her son was surprised when she confessed this to him... That was the trigger for her to reveal something that she had kept hidden inside her since childhood. A son realizes that he has romantic feelings for his girlfriend's mother. As someone of the opposite sex, he becomes lustful towards her mother... In the midst of this, Anzu, who was hurt in her heart, seeks the body of her son to fill her loneliness...
