Fifteen years after her mother disappeared on the deep space towing shipNostromo, Amanda Ripley travels to a remote space station that may hold clues to her mother's fate. But disaster strikes as she arrives at her destination.

Amanda discovers that the space station Sevastopol is anything but a safe haven. And mechanical failures and violent colonists aren't the only dangers on the facility.

Sevastopol's mystery killer hunts Amanda as she searches for her missing companions.

Marlow reveals how the alien came to Sevastopol, and Amanda partners with Colonial Marshal Waits to hunt the creature.

Amanda discovers that Sevastopol's android caretakers have an agenda of their own, and powerful outside forces have put everyone's lives in danger.

With the alien threat multiplying, Amanda pursues Marlow back to his ship, where the salvager reveals one last secret.

Amanda discovers that the alien infestation has grown beyond her worst fears.Her only hope of survival is a shot in the dark.