A medical miracle occurs, leaving the residents feeling inspired. Louis O'Malley returns to Seattle Grace after a surgery was botched by a different hospital and has all the doctors feeling sentimental. Arizona makes friends with a new paediatric fellow, making Alex feel threatened. Teddy and Henry fight over Henry wanting to attend medical school.
Teddy is called away on another case as Henry is brought in for emergency surgery; Derek and Meredith evaluate their future and finally receive news about Zola; a patient experiences severe medical complications after surgery.