Terraria is a semi-sentient world comprised of many many worlds. Each one with their own rules and events and characters that either drive or oppose them. For the longest time, these worlds are separate, unaware of one another's existence, save for a few dedicated scholars, daring adventurers and godly champions. But a dangerous anomaly caused the dividing barriers to weaken, resulting in erratic rifts that allow anything and anyone to cross between Terrarian worlds. Should this continue, the barriers will eventually collapse, resulting in an very unstable fusion of countless worlds that will soon meet its end. The anomaly must be stopped. So, Terraria has chosen again. Thus begins the journey of a quiet boy who was unceremoniously plunged into a patchwork world, the sudden vibrance of land and sky signifying his arrival.