Uptight New York City executive, Michael Cromwell, pursues his soon-to-be ex-wife to South America and returns home with the son he never knew he had—a boy raised in a tribal village in Brazil. Armed with only his blowgun, the 13-year-old Mimi-Siku discovers that the world outside his jungle home is indeed a strange place.
When Environmental Protection Agency inspector Steve Malone travels to a remote military base in order to check for toxic materials, he brings his family along for the ride. After arriving at the base, his teenage daughter Marti befriends Jean Platt, daughter of the base's commander, General Platt. When people at the base begin acting strangely, Marti becomes convinced that they are slowly being replaced by plant-like aliens.
When underappreciated video specialist Joe Scheffer is brutally humiliated by office bully Mark McKinney in front of his daughter, Joe begins a quest for personal redemption. He proceeds by enduring a personal makeover and takes martial arts lessons from a B-action star. As news spreads of his rematch with Mark, Joe suddenly finds himself the center of attention, ascending the corporate ladder and growing in popularity.
