Dr. Kiara Velez has done it all; she had her heart broken, her career stonewalled, she was in the army, she was a stunt woman, she had a daughter with a man who didn't want kids and now she's gonna face her toughest challenge yet: Grey-Sloan Memorial Hospital. She's coming on as the first Peds cardiothoracic specialist and there are a few people who aren't very happy about it.