Go travels to Hoenn for his next assignment for Project Mew. Meanwhile, Satoshi and Dande begin their full battle in the Masters Eight Tournament Finals, with Satoshi being allowed to use Mega Evolution, Z-moves and Daimax. In the battle, Gangar takes down Dande's Intereon, but Gangar is later knocked out by the opposing Barrikohru.

After Dande's Drapult is defeated, Dande gains some momentum and begins to turn the tables. Satoshi's Kairyu is taken down by the opposing Gorirander, who is then knocked out by Uonoragon. However, Uonoragon is beaten by Dande's Aceburn moments later. With just one Pokémon remaining, Satoshi sends in Pikachu to go up against Lizardon. After each Pokémon uses their strongest attacks, the clash causes Mugendina to reawaken and interfere with the heated battle.