Long ago, the Kingdom of the Vale faced turmoil as the ruler's sons battled using their Legendary familiars, disturbing the vital Dragon Force. With Victini's aid, balance was restored by binding the Dragon Force with the Sword of the Vale. Now, Damon seeks to revive his ancestors' kingdom by summoning Zekrom to claim the Sword's power. As Satoshi and friends arrive in Eindoak Town, they unite with Victini to thwart Damon's dangerous quest, avoiding a catastrophic repeat of history's ancient tragedy.