Détournement de mineur (1983)

The woman called Laura was sent to a french prison for a crime she did not commit. When she arrived there and placed behind bars, she was immediately abused by her cellmates with banan. After that one guard brutally raped her in the ass and the woman guard just watched and masturbated. Also in the film Detournement De Mineur there are a lot of nudity and shower scenes, plus a lot of scenes with sex outside the jail.