Yui is a diligent school nurse. While listening to the troubles of her male students, she ends up helping one of them with sexual relief. When the teacher finds out about this, she is Yui. A happy life with her fiance was waiting for her, but her downfall is like a rolling downhill slide... Her teacher, who she once looked up to, is reduced to a sex doll through a twisted love and hate. She is baptized with 20 consecutive creampies!