Heading towards Cyllage City, Ash & Co. meet up with the Santalune City Gym Leader, Viola who informs them about the Battle Chateau, where people go for some of the strongest Pokémon battles. While there, they meet the Gym Leader of the next city, Grant. Due to the amount of wins both Grant & Viola have at the Chateau, it is their time to battle eachother. Who will win? Will Ash manage to win his battles in the Chateau?