A wealthy entrepreneur secretly creates a theme park featuring living dinosaurs drawn from prehistoric DNA. Before opening day, he invites a team of experts and his two eager grandchildren to experience the park and help calm anxious investors. However, the park is anything but amusing as the security systems go off-line and the dinosaurs escape.

Black Lake is now a crocodile sanctuary, surrounded by an electric fence. When the fence is left open, a high-school bus unknowingly enters the park. It's up to Reba and the Sheriff to save the kids from becoming crocodile food.

In the future, a health nut and his tag-along girlfriend become trapped in a drive-in theater that has become a concentration camp for outcast youths.