Meanwhile, Michael meets Mirror B who is former Cipher admin who has now become a thief. After this, Krane is kidnapped by the Team cipher agents and Michael goes to save Krane from them and to defeat crime syndicate Cipher. Krane also introduces Snag machine, which is used to capture special Shadow Pokemon from other trainers and to purify them to have full access to their moves. Criminal Team Cipher is trying to use these Pokemons for their dark purposes, with the power of a certain Legendary Pokemon on their side. He acquaints the concept of Shadow Pokemon, which are those Pokemon whose hearts have been closed artificially and they have become aggressive toward humans. The game is set 5 years after the events of Pokemon Colosseum with the introduction of Michael, the main protagonist who meets Professor Krane.
Pokemon XD: Gale of Darkness, released in Japan as Pokemon XD: Whirlwind of Darkness Dark Lugia, is an RPG game that is a follow-up to the previous game, Pokemon Colosseum