After the duel with Insector Haga, the train falls into a river. Mou hitori no Yuugi escapes, but is separated from Anzu. He begins exploring the area, and runs into in old man. The man tells him about an object called the "Stone of Wilderness". This will aid him in finding Omote Yuugi. With concentration, illusions will appear that he must duel. His first apponent, Yuugi.