The planet has suffered an environmental collapse; the air became dangerous to breathe, the water became toxic, and billions of people died. Generations later, mankind has finally re-established a rudimentary society, in an attempt to pick up the pieces that continue to blister in the sun.

Gage (Gina Carano) is a bounty hunter and she has a chance at the bounty of a lifetime. She infiltrates a gang of outlaws in order to bring in their leader, and everything is going to plan until she meets a slave girl that reminds her of her dead sister. With her loyalty to only herself now tested, Gage learns that there might be more to life than just survival.