Ash and friends arrive at Lake Acuity, the site where Ash and Paul will have their full 6-vs-6 battle. After healing his Pokémon, Ash meets up with Paul and the two begin their long awaited battle. Who will ultimately be victorious?

Arceus, creator of the world, comes to pass judgement on humanity for the theft of the Jewel of Life, but Ash Ketchum and his friends are sent back in time to discover and possible reverse the events that led to Arceus' vendetta.