On the far side of the moon, lone miner Sam trudges to the end of his three-year stint for a mega-corporation that has hit a gold vein by harvesting lunar rock for energy. With only a self-mechanized robot (whose only human feature is a Happy Face/Sad Face component) for company, Sam shows signs of cabin fever. Hallucinating and obsessing about his wife and daughter on Earth, his fragile condition deteriorates, exacerbated when he gets whacked on the noggin as he crashes his rover on the lunar surface. Sam emerges from his grog to find an aggressive version of himself tromping around the space vehicle. Hallucination? Clone? Doppelganger?