During class, Mio is discovered by her disliked homeroom teacher while exchanging diaries, and she is lectured after school. As she listens to the sticky teacher's lecture, Mio gradually feels the urge to urinate from tension. Mio, who has reached her limit, wets herself. Unable to contain his excitement at that sight, the homeroom teacher sucks on her piss-soaked panties, licks her pussy, and rapes her. Furthermore, Mio is confined to a warehouse and subjected to further abuse. Overcome with fear, Mio wets herself again.