Take the psychotic mother-daughter team from 'Carrie'. Add the 'fire girl' premise of 'Firestarter'. Mix in a generous helping of racy, irreverent comedy, and you get a towering inferno of fun called 'Nice Girls Don't Explode'. Acclaimed actress Barbara Harris plays Mom, a domestic tyrant who makes Joan Crawford seem rather permissive. After seeing an ad for a movie called 'Fire Girl', Mom devises an elaborate scheme to shield daughter April (Michelle Meyrink) from men and sex. She decides to fight fire with fire. April's date with Ken is an utter disaster. His advances cause April's heartbeat to rise, resulting in several spontaneous combustions. Even a simple good night kiss leaves Ken's Corvette a charred wreck. Enter Andy (William O'Leary) April's 'old flame'. He's eighteen and still has the hots for his childhood playmate. Naturally April avoids him, not wanting to cause a meltdown. Over the burnt remains of Andy's Buick, April explains her unique condition. Andy is understandably skeptical, and, after hearing Mom's explanation - that April has a split personality - he takes April to a mental hospital. But that isn't the real problem.