Baron Victor Frankenstein continues his macabre experiments as the surgeon of an insane asylum, but his new creation is intent on revenge.

Four boys find a secret cave inhabited by dinosaurs from the exhibit at the New York Museum of Natural History.

A biker (Christopher Mitchum), a bear, a girl (Joi Lansing) and a sideshow promoter (John Carradine) meet the legendary biped of the Pacific Northwest. People also search for

While a class is discussing what is known and what should remain unknown, a high school teacher named Roger Mason (Bob Clymire) tells the students a horrifying story from his youth. Mason recounts how, many years earlier, he went into the forest with some students. While there, they not only discovered Native American artifacts, but they somehow also stumbled onto a mummified body. Inevitably, the mummy, which was really a monster, came alive and proceeded to terrorize the area.