Atsushi, who likes older people, secretly admires the voluptuous body and loving tolerance of his friend Kyosuke's mother, Maika. - Wanting to have a closer relationship, he invites the mother and son to a camping trip... - While Maika is sweating and getting ready, Atsushi invites her to a nearby hot spring and ends up taking a bath with her, telling her that it's a mixed bath. - Atsushi couldn't contain his excitement and forcibly captured Maika's lips. - Maika tries to maintain her rationality even as she is captivated by the young man's cock, but her body, which has not had sex in a long time, cannot resist the lust.