Alien

The crew of a United states space tug, Nostromo, is on a return trip to Earth when they are awakened by their ship`s computer, Mother, who has detected a strange transmission. They must conduct their routine search mission as they are required to investigate signals that indicate a presence of possible intelligent life. Their landing on the source moon damages their ship, leaving some of them to repair it while the others investigate the alien ship that the signal has come from. Inside, they discover a nest of aliens. When one of the aliens attacks them, they quickly return to their own ship, inadvertently bringing the alien with them, which starts causing havoc aboard.