Yahoo Web Search

When scientist Newton Graceland discovers a parallel universe known as the Reverse World, inhabited solely by the Pokémon called Giratina, he plans to harness its power. Although Graceland abandons that idea, his evil assistant Zero secretly plots to capture the Reverse World for himself. In order to stop him, Graceland enlists Pokémon trainers Ash, Dawn, and Brock to help Giratina stave off the treacherous Zero. Wikipedia