Team Aqua has gained control over Kyogre and prepares to unleash its powers over the world's water levels. A Blue Orb-possessed Pikachu releases Groudon from its entrapment and the two prepare to take on Kyogre in a battle to end all battles. Will Groudon and Kyogre destroy the world with their legendary battle or will Lance, Ash and his friends be able to stop the world's imminent destruction?