Lin Mo, a former interstellar marine, was near death in a freight accident and was accidentally bound to the [Xinghai Mall System]. Starting from a dilapidated frigate, he dealt with empires, companies, star thieves and mysterious cults. Under the starry sky like a dark forest, he made "transactions" into a bridge between civilizations. When the ancient shadow that harvested the galaxy came again, everyone discovered that what this arms dealer was selling was never just weapons, but the "possibility" of civilization's survival itself.