Nami invites her son, who dropped out of university and has been staying at home, on a hot spring trip to get him out of the house. The two have been involved romantically for some time. Despite being her stepson, Nami struggles with the idea of having a physical relationship with him. However, during the trip, her stepson suddenly confesses his feelings. Though she believes it's wrong to go further with someone who resembles her late husband, once they touch, they can't stop. She takes his hardened cock in her mouth, succumbing to the pleasure of being held and making love to him repeatedly. This is a story about a forbidden parent-child relationship.
