When Ash and his mother accompany Professor Oak to the distant Unova region, Ash discovers Pokémon he's never seen before... and that he can't wait to catch! He may have Pikachu at his side together with new friends Iris and Cilan, but he'll still need plenty of new Pokémon on his team if he wants to challenge Unova's expert Gym Leaders. His quest to become a Pokémon Master got tougher!