It's the 22nd Century and a tough, pioneering people are mining the moon to produce energy for a desperate, war-torn Earth. Crater, an orphan, loves his life in Moontown, a frontier mining settlement. Not quite 16, he is already a seasoned Helium-3 miner with hopes to be a foreman on the scrapes someday. But the man who owns the mine has a different plan for Crater and another orphan, a young girl with a violent past named Souza. They must venture forth on a forbidding river of dust, and together they'll cross the hostile Lunar terrain before vaulting in to the far reaches of space. Danger, adventure, and discovery await them as they must use their wits and courage to find a mysterious treasure.