Her husband is a good-paying businessman. Her friends are jealous of her, but her mundane, unexciting life is boring... Then, she hears about "Mama-katsu" from a friend. Though she doesn't think it's possible to pay for a young man, she meets a younger college student out of curiosity. Her maternal instincts are tickled, and she gives him her pocket money. Airi repeatedly crave his young, energetic cock, and feeling that she is needed as a woman for the first time in a long time, she begins to have a forbidden relationship with the young man...