- The USCSS Nostromo is diverted off its course to Earth to answer a distress beacon on the moon LV-426 (then-unsurveyed).
- The crew of the Nostromo land on LV-426 and find the signal is coming from a derelict ship.
- One of the crew members, Thomas Kane is attacked by a Facehugger.
- The crew of the Nostromo are killed one by one by the lone Xenomorph until Warrant Officer Ellen Ripley is the sole survivor.
- The Nostromo's self destruct system is activated, destroying the ship, and the creature is killed by Ripley aboard the shuttle Narcissus; she enters hypersleep for an unexpected 57 years.
- Thomas Kane
- Samuel Brett
- Arthur Dallas
- Ash (physical body only)
- Dennis Parker
- Joan Lambert
- The Alien
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