Fifty years after the fusion of the Game World and Reality, a top-tier warrior emerged. He dedicated his life to the world but was ultimately killed by the highest authority out of fear. Before his death, he awakened the SSS-Rank hidden skill [Mirror World] and sealed his soul beneath the surface of a lake. The King covered up the history and fabricated a new one; from then on, the warrior was known to the world as a traitor. Decades later, the warrior has awakened in the body of a dying man, using the [Mirror World] skill to begin his revenge.