An alien creature stalks human prey.

A scientific team in Mexico discover a pool of unusual baby "octopus-like" specimens. Gathering a few for analysis back at the lab, it is soon discovered that the critters belong to a gangly six-foot half man/half octopus-like creature, that's pretty angry and wants her 'babies' returned…

On the run from the police in Athens, a man named Jason has in his possession a microfilm eagerly sought by both criminal gangs and government agencies.

A young cavalry officer finds his woman tortured by the Apaches and blames the Army for not properly protecting the outpost, so becomes a deserter and an avenger, stalking and killing Indians without warning.