Jerry tries to seduce his girlfriend Monica via hypnosis, but it accidentally makes her want to enter a convent and take a vow of chastity instead. Jerry tries to get her out by disguising himself as a priest and, later, a nun. Alas, his rescue attempt crosses paths with a mobster who's looking for his hidden stolen diamonds in the convent. Things get even more complicated when the pope himself decides to pay a surprise visit.

When Christy Murphy comes home past midnight with her boyfriend, Jerry, her parents send her to the Academy of the Blessed Virgin, a Catholic school run by kind but very strict nuns.