It’s been twelve years since a massive solar flare destroyed communications with the American base on the far side of the Moon, killing the platinum mining workers and leaving just three adults to raise 37 orphans. Isolated, the base has carried on, and the orphans—now teenagers—have taken up the mining. It’s all they’ve ever known. But now enigmatic lights in the sky mark the arrival of someone—or something—that heralds an end to a patterned life of restraint and enforced duty.