In the not too distant future, Earth no longer has room for graveyards. Callisto, a rocky moon of Jupiter, has become designated as the Graveyard Moon, but only the wealthy can afford a proper burial there. Cooper and his longtime crew prepare their cargo ship to transport a load of the dead, having flown this route many times over. But their routine trip is disrupted by deception and greed and they find themselves under siege by the ghosts of the dead they carry, teaching them a lesson they may learn too late: never disrespect the Dead.