Whilst giving his final videotape interview, death row convict Hud Masters reveals a story of evil aliens that the authorities take seriously.

Masters execution is faked by a secret government organisation and his body is injected with an alien foetus. This will enable him to help track down and destroy murderous aliens who are inhabiting human beings.

In a race against time, this former serial killer turned alien hunter must defend the human race with the help of secret agent Logan.