I only had a chance to catch the first half hour and missed the rest of the last 15 minutes of the show.
We find Grace pretty much looting Leo's apartment of everything he owns, a direct result of his cheating on her in Cambodia. She's very proud of herself and KABBALAH! Karen and Jack are also proud kabbalah bracelet wearers. Pretty effing hilarious parody on what's become of kabbalah since celebrities are jumping on the kabbalah bandwagon.
Jack's just returned from his tour with J-Lo, who makes an appearance in this episode. They're "best friends".
Karen, who divorced Finster after only 20 minutes of marriage, writes a song entitled "FYI: I Hurt Too" and tries to recruit Jack to pass it on to J-Lo. Because of that, he and J-Lo are no longer "best friends".
Leo tries to convince Grace to forgive him, and though she's very abusive when it comes to his property, she has a change of heart and Will organizes a dinner party for all of them.
And after that...I had to go to work. Sorry.