After marrying the love of her life, Miyu becomes stepmother to his adult son Hajime. When an accident leaves Hajime with broken limbs, he recuperates at home and Miyu cares for him despite his demanding behavior. Unable to relieve himself, he frequently has wet dreams. One day as Miyu wipes his body, Hajime asks her to touch his cock and claims that helping him is what a stepmother should do. Confused but moved by his desperation, she crosses the line and agrees to satisfy him.