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.
While the raiders are fighting outside, Ellie has been left in the care of Soren, The Overseer's personal guard robot. As they reflect on their pasts they may find they have more in common than their appearances would let on.