Faraday and Quinn arrive at a remote mining site on the far side of the moon that supplies helium-3 to Utopia Base, where they have lived their entire lives believing the Earth has been devastated. Faraday soon realizes that she has forgotten her supply of a medication called Sustain, which everyone accepts is necessary to maintain their bone and muscle mass. As time passes, she begins to notice the alarming neglect of the camp and starts questioning its operations.

To prove to herself that she isn't going crazy, Faraday destroys Quinn’s supply of Sustain. This act prompts Quinn to confront the unsettling truth: the maintenance systems have failed, and there are secrets being kept from them. Following a trail of clues, they discover that the resource shipments are not actually being sent to Utopia.

Determined to uncover the truth, they stow away in a hopper as it prepares to launch.