It's been two years since baiyu died, and now he's back. He's got a new soul, which is much more powerful than his old one. Ooh, that's a big deal, right? It turns out that s/he's the one who's going to open the portal to the other dimensions, and he'll be able to do it faster than the other mage. Aww. He doesn't seem like a good fit for the job, but then he realizes that it's actually a good idea to look for someone else to do the job for you guys.