Lin Mo, a former interstellar marine, is left on the brink of death in a cargo accident and unexpectedly binds himself to the Starsea Marketplace System. Starting out with a battered frigate, he navigates the Empire, corporations, space pirates, and a mysterious cult, turning “trade” into a bridge between civilizations beneath the dark-forest stars. When the ancient shadow that devours the galaxy descends once more, everyone realizes that this arms dealer has never been selling only weapons, but the very “possibility” of civilization's survival.