This is the Distortion World, a very cool place added to Pokemon Platinum. It's a pretty long dungeon with a few puzzles and mazes here and there, though (thankfully) no wild Pokemon to fight. I had a lot of fun with it. (: Anyway, this isn't the entire thing, but it gets you through all of the puzzles inside of the Distortion World, and that's really most helpful. The next two videos will be of Cyrus and Origin Forme Giratina respectively.