Ash and Pikachu, along with their friends Iris and Cilan, are on a train headed to the next stop on their journey. From the train, Ash spots an injured Pokémon they don t recognise. They re planning a rescue when the train is attacked by the Legendary Kyurem!

The Mythical Pokémon Keldeo is on a mission, to rescue its friends Cobalion, Terrakion, and Virizion, the Legendary Pokémon known as the Swords of Justice from Kyurem s icy clutches. But Kyurem has other ideas, and when it transforms into Black Kyurem or White Kyurem for greater power, things look grim!