Shun Nonomura is a young man out of Monopolis, a sprawling miner's colony on the lunar surface. His people mine helium-3 and other essentials for Earth, but in the late 21st century, Earth's resources are depleted and the planetary government has resorted to authoritarian rule to get what they want. As the put-upon miners - including Shun's own family and friends - start to organize a revolt, they come under attack from Earth's new lunar commander: Alex Rigel, a military man unafraid to use force to put down the uprising.
As Shun's idealism and Alex's chilly pragmatism clash, Monopolis is thrown into chaos. The last, best hope for victory lies within a mysterious alien artifact that the lunarians worship as a god: Dallos!