After Lin Yan failed the high-level magician qualification exam three times, he gave up the retreat arranged by his family and opened the "Failed Store" in Weize City to make a living. He unexpectedly found the "World Gap Compass" from a junkyard and discovered that it could connect to other worlds and transform ordinary props. As a result, he was involved in the "double world energy balance" crisis, and gradually grew from a self-doubting failure to a "foreign world connector" guarding many other worlds such as the Mirror Moon Realm and the Blue Sea Realm.
