Alien: Terror begins when the crew of a spaceship investigates a transmission from a desolate planet and discovers a life form that is perfectly evolved to annihilate mankind. Each crew member is slain until only Ripley is left.

Speices: SETI receives a message from space on how to splice alien DNA with human DNA. The result is Sil, a beautiful half human, half alien hybrid who is desperate to mate with a human. If this happens, the human race is doomed.