A young progressive nun creates headaches for the Mother Superior.

Despite misgivings, conservative Mother Superior Simplicia accompanies progressive Sister George and the girls of St. Francis Academy in Pennsylvania to an ecumenical rally in California. En route they encounter a gang of motorcyclists, intent on rape; spend a night at a Catholic boys' school administered by Father Chase, during which the girls demonstrate bomb manufacture and attend a rock dance; are hosted in New Mexico by Mr. Farriday and his six sons; and are attacked in Arizona by Indian extras enraged at the film director employing them. During the California rally, the nuns, inspired by the spirit of Christian fellowship, resolve their differences, changing their former habits for short skirts and ebony hose.