Bailey then leads the now five familiar residents along with all of the others (who I'm sure we've never seen just because they don't hang out in the locker room or work in cardio, or plastics, or neuro, or anything else we might ever have seen before this moment) to somewhere, but she won't say where. She just informs all of them that they are with her and off of their regular assignments that day. Lexie has found George to ask if he had seen his locker with the smelly candle so that he can smell like cinnamon buns all day. You can't make me believe that she wouldn't have already sniffed at the air and, like a bloodhound, noticed that he didn't yet smell cinnamon-bunny, since he clearly just joined the crowd from a total other direction, probably where he was doing his paperwork. The regulars of course just keep bitching about all the things they were supposed to do that day until Bailey turns and tells them something they've never heard before. "Today is not about you." She informs them, in fact, that today is about Bailey and a project she's been working on for a long time that is very important to her, and therefore is going to be important to them. Sheesh, Bailey, it's like you think you are responsible for getting them to the place they are now and expect them to be grateful or something. Crazy! She goes on that all fifteen of them need to work together with her to do whatever it is they are going to do and gets a lukewarm response when she asks if everyone is clear. She then leads them into a big room as she tells them that they are doing twelve surgeries -- six kidney transplants in six operating rooms, all done simultaneously. All six donors and six recipients are giving and getting kidneys from total strangers in a complicated mix-and-match otherwise known as a "domino surgery."