Ripley and Zoe are survivors in a world burned to ashes by the spacefaring Dragoon Swarm. Together with an alien child they rescued, they fight tooth and claw to secure food and water, and evade the toxic fumes that begin to fill the sky.
After awakening in the sick bay on board the Oasis, Ripley rejoins her crew and meets the family in charge of the fortress, and their charismatic leader.