In case you missed the spoilers thus far, the episode will see Cristina imagining two different routes her life could take based on one decision — with sort of a Sliding Doors format. Clearly, one of these routes leads to parenthood — but a stressful parenthood, as we see Cristina and Owen embroiled in a big argument.
In other photos from this set, we see Callie (Sara Ramirez) helping a patient (guest star Cha)rlie Hofheimer) acclimate to his Iron Man-like suit — we imagine the dude is paralyzed and the suit helps him regain use of his limbs. But just as the docs are looking proud of themselves, the trial goes awry and the guy collapses.
Oh, and we also see Arizona (Jessica Capshaw) rocking some seriously fitted scrubs. Looking good, girl! Then again, Owen's scrubs are different. and he wears a high-tech name badge with a different Grey Sloan Memorial logo, so maybe these photos are from one of Cristina's imagined futures.