Chris Rockraft is a young self-taught geomag. Lives on the outskirts of a mountain city and steals food so as not to die of hunger. Suddenly, he meets an ambitious inventor. Each develops his main talent with incredible zeal. Together they combine holemaking and mechanisms into something fundamentally new. It all starts with manual gold mining. With the money they earn, the guys create a factory for the production of working golems. They get rich and become serious players in the economic arena. Once, people who considered the Rocraft clan exterminated, arrange a hunt for the only heir. This forces friends to master not only economic subtleties, but also military affairs. They are forced to establish the production of combat golems in order to protect themselves, and then the whole city from mercenaries and fish people...