In a convent in Madrid a band of nuns called the Humble Redeemers practice their particular brand of the Catholic Religion under their motto, 'Sin Is Our Chosen Path'. Yolanda, a nightclub singer, witnesses her boyfriend die from an overdose, and with the police out to question her, she decides to take refuge with the nuns. The convent specializes in the salvation of murderesses, but their benefactor has stopped coming up with the money, and, fearful that they may have to sell the place, the nuns welcome Yolanda. Yolanda encounters an unusual religious life: a heroin-addicted lesbian Mother Superior, a soft porn writing nun, another into acid and one who wrestles tigers.