Meredith and Derek have fallen right back into parenting and Derek is now Everydad, filming every moment he can of Zola's waking hours, in hopes of getting her first step on tape. Mere's VO O'the Week is about the pressure to perform, like when you were a kid with a starring role in the school play. Zola's probably not feeling any pressure since she is a baby, but she's also resolutely not taking that first step as long as Derek has the camera on. He and Meredith are beside themselves with joy at having her; it's really sweet. I also imagine it's not hard at all to act with this baby and to tell her she's the cutest baby in the world because I practically coo that at my television screen every week.
Mere then tells us that back in olden times we used to call the operating room an "operating theater" and explains how it still feels like one: As the sun rises in Seattle we see the overhead OR lights turn on and the support staff get the room ready for the big show, putting on their costumes and masks. Classical music plays as she continues that everything has to be rehearsed and choreographed which is what almost every doctor on the staff is doing right now as they gather in the now-ready OR. As Owen talks to them all about being prepared, we see that everyone has on a red or a green headband which designate which surgical team they are on. Arizona is heading up the Red Team while Derek has the Green Team and Owen explains that they have given a couple all of their pro bono dollars and resources, so he wants the docs giving everything they've got in this surgery. You know, as opposed to all the other days when he's fine with them just phoning it in. He explains that Arizona has been caring for these patients since the day they were born and then pulls back a sheet to reveal two baby dolls stuck together at their backs, one with a little red headband and one with a little green headband; these are the practice dummies that represent the conjoined twins that the docs are separating today.
Bailey is one of the only doctors not on the twin case and when she walks in to her significantly less crowded OR, she's not pleased to see that Ben is working with her. He switched off of the conjoined twin case so that he could talk to her, and after a lot of back and forth where she tells him she's not talking about "it," we find out that "it" is moving in together. If you are close enough to want to move in together, can't the conversation wait a day if one of you has the chance to work on a once-in-a-lifetime surgery, as everyone is so quick to remind us this is? But we needed a subplot, so here we are. After he points out many of the benefits of cohabitation ranging from romantic ones to the practicality of having one electric bill, she points out that they have been together for two weeks. He insists that it's been two weeks and nine months that they had before the "pause." He wants to pick right up where they left off, but Bailey seems not to share this idea, and she leaves the room.