Alien

A 1979 American science fiction horror film directed by Ridley Scott. The story takes place aboard the spaceship "Nostromo," whose crew encounters an unknown life form after responding to a distress signal from an unknown planet. Upon discovering the alien creature, which later becomes known as the "xenomorph," the crew must fight for survival. The film focuses on Ripley (Sigourney Weaver), who emerges as the series' central character. "Alien" became famous for its atmospheric tension and innovative blend of science fiction and horror, paving the way for a successful franchise.