They come in the night, silent as death. They are the perfect killing machines. They are strangers. And although some people consider them perfection, trying to arm a creature of such power is too dangerous a game for the inhabitants of the Earth... The depths of space offer one of the last refuges from the horror whose name is aliens. A group of survivors sets out on a journey in search of salvation and the remnants of humanity. In the darkest corners of the galaxy, they desperately search for a timid glimmer of hope... Lieutenant Ellen Ripley returns! Waking up from a long journey through space with a mysterious gap in her memory, Ripley meets two war-torn comrades, Wilkes and Billy. Together they prepare for the final battle with the aliens. But Ripley has a secret - a secret that will become both her greatest weapon and her greatest weakness...