A friendly troll with a magic green thumb grows one flower too many for the queen, whose laws require all trolls to be mean ugly and scare humans whenever possible. As a punishment, he is exiled to a world of concrete, where he should live a life of proper trolldom: Manhattan.

The plot is about a guile young terrorist who is able to blackmail a series of companies by placing home-made radio controlled bombs within the central attraction of amusement parks; roller coasters. The young man played by Timothy Bottoms gives a hard time to the cops after they give him UV marked money. He then wants revenge and places a bomb in a roller coaster at the most important amusement park event of the year.