When a man claiming to be long-lost Uncle Fester reappears after 25 years lost, the family plans a celebration to wake the dead. But the kids barely have time to warm up the electric chair before Morticia begins to suspect Fester is fraud when he can't recall any of the details of Fester's life.
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.