Bruce, the owner of an aerospace company, is infatuated with Jennifer and hires her to be his biographer so that he can be near her and win her affections. Is she actually a Russian spy trying to obtain aerospace secrets?

A young girl is killed at the beach in Malibu. Professor Otto Lindsay suspects that it is some form of mutated fish. However, his son Richard, who was a good friend of the girl, thinks that it is a madman who has a grudge against Richard and his friends. Soon the list of victims grows.