"Castelia City has been frozen over by Kyurem and is now locked in ice. White is still searching for the whereabouts of Black, who has been missing since the battle against Ghetsis. And Fennel has come up with a theory that the Light Stone is actually connected to the Pokémon Dream World. Will Black, White, Blake and Whitley be able to team up in time to stop Ghetsis, Colress and Kyurem at the Giant Chasm?"--Provided by publisher.