When a series of unexplained vicious animal attacks strikes his community, Sheriff Jim Tanner and his assistant Barbara trace them back to a Dr. Hyde, a former military researcher whose government funding for a dinosaur cloning project was cut. When the Pentagon discovers Hyde obtained foreign backing to continue his experiments, they send in a strike team to save Tanner and Barbara and stop Hyde.

A Marine Colonel and his men are sent abroad on hostage rescue mission. When they arrive, they find the hostages dead and decide to get payback by massacring the village. Upon their return home to the US, they must face the consequences.