Her mother-in-law died three years ago, leaving her father-in-law depressed and apparently unable to get an erection. He tries supplements, exercise and every other remedy he can find, but nothing works. Watching him earnestly struggle because he does not want his late wife to worry about him, his daughter-in-law cannot stand by any longer. When he suggests that sharing a bath might help him recover psychologically, she agrees to cooperate, never expecting what will happen once they are naked together.