NEWSFLASH! Cristina is sleeping with the Mayo Clinic's head of cardio, Dr. Parker. He's about as jovial and carefree as a person can get and she's, well, not. Hey, opposites attract, right? Cristina assures Meredith that Parker is just her sex friend. Her closest pal in the great state of Minnesota is the guy she couldn't stand initially. That would be the elderly Dr. Thomas. The guy is Cristina's ancient Minnesota Meredith if that makes any sense.
Cristina learns that her new sex friend is looking to force Dr. Thomas into retirement. She realizes the only way to save her Minnesota Mer-man is to get him to ditch his old school ways to do a procedure that's a bit more 21st Century. Dr. Thomas struggles during the operation. He wants Cristina to take over. Instead, she talks him through and everything turns out aces. Afterwards, Cristina lets Dr. Parker know that she having drinks with her friend, Dr. Thomas. That means her sex friend will be going home alone.
David is the amiable fellow who is fitting Arizona for her new prosthetic. He can see how hard this is for her as she struggles to adapt to this new life. He also witnesses firsthand the venomous tirades Arizona is still hurling at Callie. David gives his patient time to cool down after he also experiences her wrath. Arizona attempts to walk while he's away. Alex pops into the room just in time to catch her when she falls. He says they need her back at work. Arizona says she's trying. Alex lets her know that Callie is trying, too.