Following the events of Alien and Romulus, Lieutenant Ellen Ripley and Rain find themselves embroiled in a new space threat, but this time on EARTH, in the isolated Detroit colony. There, a group of Marines exiled by the Weyland Corporation, led by the fearless Captain Rodrigues, face the unimaginable on planet Earth: the terrifying Xenomorph, which has come from space to terrorize them in the claustrophobic and enclosed environment of the colony where they live.