In an ultimate showdown between the Demon King Zhao Lie (random surname "Zhao") and the brave Sun Hao (random surname "Sun"), due to an accident of an ancient curse spell, their souls exchanged bodies. They are forced into each other's lives and experience completely opposite lives. In the body of the hero, the devil begins to face the sufferings of the people; while in the body of the devil, the hero has to learn to control the machinations of the dark palace. Their changes plunged the entire world into confusion and turmoil.
