Beloved classic SISTER ACT follows Deloris Van Cartier, a lounge singer who enters witness protection in a convent after witnessing her mobster boyfriend commit murder. Disguised as a nun, she initially clashes with the Mother Superior. However, Deloris transforms the convent’s struggling choir into a soulful, popular group, bringing new life to the church while inadvertently blowing her cover and eventually facing her enemies with her newfound sisterhood.