The Great Network is a place of drones and androids, maintenance spiders and Station Angels. The place of the thousand gates, where sentient trains crisscross the galaxy in a heartbeat.

Zen Starling is a petty thief from Thunder City. So when mysterious stranger Raven sends Zen on a mission to infiltrate the emperor's train, he jumps at the chance to cross the galaxy in a heartbeat. But the Great Network is a dangerous place....