A reporter, cameraman, and some petty thieves are stranded in a boat out on the ocean. The only thing that stands between them and their lives is a 50-foot prehistoric megalodon shark. They must all pull together to survive.

An explosion at a lab lets loose onto the streets an army of mutated, murderous sharks and other creatures injected with a potent new stimulant.

A deep space crew takes a job on a mysterious remote planet. A crash landing strands them on the hostile surface. Soon they find out what creatures live there, and the hidden fate of the crew before them.