She's attractive, seductive, intelligent...and her charms could spell doom for the entire human race. When a beautiful human/alien hybrid (Natasha Henstridge) escapes from observation, scientist Xavier Fitch (Ben Kingsley) dispatches a government assassin, an empath, a biologist and an anthropologist to find her. Tracing their prey to L.A., the crew discovers her horrific plan to mate with unsuspecting men and produce offspring that could destroy mankind.