The crew of the deep space towing vessel Nostromo are woken from hypersleep to investigate a strange signal from a nearby planet. While investigating the signal, they discover it was intended as a warning, and not an SOS. Ellen Ripley wants to follow protocol and leave things alone, but the Nostromo's parent company has other ideas. Bad ideas. Dangerous ideas.
Starring Sigourney Weaver and Tom Skerritt. Directed by Ridley Scott.