Insect-like aliens invade a small town. The local teenagers have been watching a sci-fi marathon in the local theater, and from those films they get ideas on how to fight the creatures.
When Ripley's lifepod is found by a salvage crew over 50 years later, she finds that terra-formers are on the very planet they found the alien species. When the company sends a family of colonists out to investigate her story—all contact is lost with the planet and colonists. They enlist Ripley and the colonial marines to return and search for answers.