@Lustig Andrei,
It sounds like a Roger Corman film, "Nuns gone Bad, Dungeons of Reprimand".
I hope I live to see the day when the Church finally collapses under the weight of its own malignancy. Unfortunately I suspect that humanity will not be rid of this cancer any time soon.
Any good that religion can claim is constantly undermined by the institutions that control it (and claim to represent it).