A few new Pokémon -- including Paul's distressed Chimchar -- join Ash, Brock and Dawn as they have more action-packed adventures in the Sinnoh region. Now they must expand their knowledge to incorporate these newcomers. A session at Professor Rowan's Pokémon Summer Academy should help -- but meanwhile, they must continue to foil Pokémon Hunter J and Team Galactic's efforts to thwart their progress.