While Ash and co. are at a Pokémon Center and watch a battle between Cynthia the Sinnoh League Champion and Lucian, member of the Sinnoh's Elite Four, they hear that Cynthia is nearby. When they finally meet her, Paul appears and challenges her to a six-on-six full battle. Cynthia agrees and the battle starts. Will Paul be able to win against Cynthia and her strongest Pokémon, Garchomp?