About Pokemon Diamond: Pokémon Diamond takes you into the new Sinnoh region, where two unique Pokemon are symbols. The Dialga and Palkia appear in myths and old folklore; legends say they can control space and time. The sinister organization called Team Galaxy is trying to rule the region by capturing and training thes Pokemon. During your adventure to complete your Pokedex and become Champion, these Pokemon & Team Galaxy will intertwine into the story and lead you on a fantastic journey across the Sinnoh region.