As U.S. troops storm the beaches of Normandy, three brothers lie dead on the battlefield, with a fourth trapped behind enemy lines. Ranger captain John Miller and seven men are tasked with penetrating German-held territory and bringing the boy home.
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.