Silver is the only metal girl in the solar system, and that's why she has to be careful. In a galaxy full of powerful near-immortals, she has been taught by her guardians that the Kura System is a dangerous place; a place that she can't be a part of until her creator deems her ready. Day after day, she studies inside of her home in Earth's moon, but when Silver's curiosity and lust for fun get the better of her, she takes a step that will change her life forever, and more than that, her fate becomes intertwined with the most powerful man in the Kura System, the Sentinel of the Sun.