Kokoro Ayase, having received a recommendation to her desired university, is instructed by her homeroom teacher to submit a health examination, leading her to visit a designated clinic. Upon arrival, Kokoro is subjected to a lewd medical examination involving nipple play and exposure of her anus—clear doctor harassment. Told it's treatment, she is forced to drink an aphrodisiac, which leads her into a private room where she ends up submitting to depraved acts.