Witnessing students bullying a classmate, female teacher Maria intervenes—only to be captured by delinquent boys who seize the opportunity to exploit her secrets. Forced into submission through blackmail, she is made to have sex with the very students she tried to protect. During class, her 115cm extra-large breasts are groped and massaged openly; after school, she's brutally taken in front of crowds of students in the classroom. Her daily life turns into a sadistic nightmare, as her big tits are mercilessly abused and humiliated again and again.