Pokémon: Mega Evolution Special(ポケットモンスターXY特別編 最強メガシンカ)

This four-acts special of the Pokémon anime takes place during Ash's journey through Kalos and is focused on a trainer named Alain and his partner, a Mega Charizard X, on their quest to research and defeat every known Mega-Evolved Pokémon. Along the way he is joined by Mairin, a beginning Trainer who has a Chespin named Chespie as her partner.