Spoilers: it is pretty much the kanto anime but Brock and Misty are replaced by two people from Sinnoh. They attempt to condense like 5 seasons of anime into 20 minutes of film. There is this whole thing about Ho-oh which isn't really explained, and Marshadow is evil now for some reason which is also not explained. The whole reason I watched this was to get some more info on Marshadow since it wasn't really talked about much and this was a huge let down.