-( Story related, cannot be missed )-
Episode 1: A Blooming Rose
Episode 2: Organization XIII
The first episode will be pertaining to trying to kindle the romance between Belle and Beast, now that their world has reformed. If you really want to know how it works, see the movie; the Heartless at the end is frustrating as it will repeatedly make use of the entire ballroom to give itself a different phase. When it phases into the back windows, your best course of action is to stay away; when it takes over the chandelier, knock it; when it takes over the pillars, whack it and then Release it. The second form is a bit more ferocious but if you've taken down the chameleon from KH1 (Deep Jungle, Clayton fight), you'll understand that it may not be visible but it is easily seen. Use the chandelier to your advantage to kick it out of its stealth and use Valor if necessary to get some steady hits in.
The second episode introduces us to the Organization member Xaldin, the Whirlwind Lancer. His boss fight is extremely unfair. He will constantly cast Aero on himself (because they removed that from your repertoire due to how powerful it was) and strike at you from afar. If you can, use Learn (react) and build up a stack (though you might end up getting hit in the process); once you've built up a decent amount, strike back repeatedly to deal mighty damage. When he uses his ultimate move, your best bet is to jump over it or breach it early so it doesn't push you from one side of the bridge to the other. You might want to use the temporary frames of invulnerability granted to you from using healing items or Cure to see if you can break through it.