Raven Shaddock and his gang of merciless biker friends kidnap rock singer Ellen Aim. Ellen’s former lover, soldier-for-hire Tom Cody, happens to be passing through town on a visit. In an attempt to save his star act, Ellen’s manager hires Tom to rescue her. Along with a former soldier, they battle through dangerous cityscapes, determined to get Ellen back.
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.