Ripley (Sigourney Weaver) is back, 200 years later, to discover that her ‘resurrection’ is the result of a scientific experiment, cloning her preserved blood samples in order to give birth to the alien creature she was carrying – for scientific exploration. Ripley's DNA gets mixed up with the alien Queen bug’s and she begins to develop certain alien characteristics. The scientists begin breeding the aliens, which manage to escape. Soon the Xeno-morphs are running amok on the ship, which is on course to Earth. The Queen gives birth to a deadly new breed of alien, which could spell disaster for the entire human race. It's up to Ripley and a band of space pirates to stop the ship before it reaches earth.