A Tale Untold. A Legend Unleashed. The Legendary Arceus is at the centre of the recent disruptions in the Pokémon World. Now, Michina Town is at the heart of the action. The town has a long history and checkered past in relation to the mighty Arceus after Arceus granted the townspeople some of its power as the Jewel of Life, they betrayed the Pokémon! Ash and his friends, accompanied by their new companion Sheena, travel in time with Dialga s help to right the mistakes of the town's ancestors before the world crumbles under the power of Arceus's rage. Will they be able to fix the mistakes of the past? What really happened in the past did Sheena's ancestors truly betray Arceus?