On a post-apocalyptic exoplanet, worker drones struggle to survive by hiding from rogue robots called Murder Drones.

The core collapse of an exoplanet known as Copper 9, owned by a mining corporation, causes the planet to freeze over, wiping out all biological life, including humans, in the process. Service robots left by humanity try to eke out a new civilization, but killer robots developed by the mining corporation that caused the extinction event, following their programming to kill the remaining rogue robots not following company protocols, massacring hundreds of service robots everyday. The story begins when a service bot befriends a killer robot, who then work together to escape the planet.