Honoka is a single mother who also works as a teacher. Hoping that her only son would go to a good school, Honoka tutors him diligently at home. However, this repressed academic life and the allure of his mother before his eyes pushes the teenage son's sexual desire beyond its limits! The son pours all his desires out upon his beautiful mother's body, and Honoka regains her true nature as a woman as if a dam had burst. In between studying, she gives him a blowjob, and at night she has creampie sex in lewd underwear! Mother and son are freed to engage in taboo sex!