"I'll take the best care of you, teacher, okay?" A student who is madly in love with his high school teacher Yura gives her an aphrodisiac during a supplementary class after school. Yura, who has been deprived of her freedom by the aphrodisiac, is forced to accept relentless desires, and her feelings and semen are spilled on her. She gradually begins to crave cock herself, turning into a female beast.