An over zealous pokemon called Keldeo enrages a very powerful Kyurem. With the help of Ash and Pikachu, can Keldeo become a sword of justice and defeat the mighty Kyurem?

When Pikachu is taken to the Tree of Beginnings by the playful Mew, Ash Ketchum and friends are guided to the tree by Lucario, a time-displaced Pokémon who seeks answers regarding the betrayal of his master.