Well, you go through the various Colesseums to battle trainers on different levels (Like Pokemon Stadium.). They do have a final Boss, it's a short, stout guy who looks like he's a magician almost. But in terms of a story line, such as Colesseum or XD, there is none. The unlockables come from completing various cups and what not. As you progress there are more possibilities (clothing) for the create-a-character mode and unlock new modes and a Pikachu that has Surf and I think it's Volt Tackle.