Derek sees a ghastly accident and jumps into action to help the wounded.
A small plane crash occurs, triggering bad memories for Meredith and Arizona as injured victims are brought to the hospital. Meanwhile, tension between Owen and Amelia creates an awkward work environment for Stephanie.moreless
Upon realizing that Owen and Amelia have been seeing each other behind her back, Meredith comes down hard on her sister-in-law causing Amelia to rethink things. Meanwhile, Catherine springs into action when a man is brought into the hospital after his wife seeks revenge on his cheating ways.moreless
A group of children visit the hospital on a field trip and observe two injured cops rushed into the emergency room. Meanwhile, Stephanie develops a crush on one of the chaperones; and Amelia's forced confront her feelings about Owen.moreless
A man with Alzheimer's crashes into a pregnant woman; Meredith worries about Derek cheating on her and the date of their marriage.
An earthquake leaves Maggie trapped in an elevator and threatens Meredith's streak of successful surgeries; Owen gives medical advice over the phone.
The moment of truth has arrived. Amelia begins the daunting surgery to remove Dr. Herman's tumor. Meanwhile, Arizona takes the lead on a case that means a lot to Dr. Bailey.
The hospital doctors become fascinated with Dr. Herman's case when Amelia gives a lecture detailing the intricacies of the surgery. Arizona and Herman continue to bond over the amount of cases they are trying to complete before the big surgery. Meanwhile, Bailey brings them a case of a pregnant woman who is close to her heart.moreless
Maggie gets upset when Meredith dodges her questions about DC; Bailey and Ben become concerned about Ben's brother after he is admitted to the hospital, and Dr. Herman starts to warm up to Arizona. Meanwhile, Richard feels manipulated by Catherine.moreless
April and Jackson face a tough decision concerning their unborn baby. Elsewhere, Catherine encounters Richard at the hospital; Meredith searches for a babysitter so she can visit Derek; and Amelia tries a tough-love approach while working with Stephanie.moreless
April stays positive as tests are run on her baby; Dr. Herman plans a crash course in fetal surgery; Callie and Owen encourage each other to return to the dating scene; Bailey, Meredith and Maggie try to learn more about a patient's tumor.moreless
Meredith keeps herself busy while Derek prepares for his move; Jackson and April get difficult news; Arizona and Amelia talk about how best to approach Dr. Herman.
Pierce and Grey disagree with Derek about the best way to approach a patient's case, which lead the couple to a very big argument. Meanwhile Callie feels responsible for one of her veterans when he is pushed too far and a doctor's routine procedure shows devastating results.moreless
Amelia's past addictions don't stay hidden and result in trouble for her at work. Meanwhile, Jo performs her first solo surgery; Arizona must make a tough call when Dr. Herman is away; and a couple who were caught in a fire arrive at the ER.moreless
Owen bonds with a patient who may have been in the military. Meanwhile, April's mom visits her and Jackson; Bailey takes a closer look at her own health; Derek arranges a family meal; and Dr. Herman has shocking news for Arizona.moreless
Callie and Arizona examine their marital problems and what's contributed to them. Meanwhile, Callie devotes herself to the veterans' project; Arizona strives to impress Dr. Herman; and Richard seeks guidance from Bailey.
Secrets from Ellis Grey's past come to light. Maggie makes a shock announcement and Callie continues to work on the Veteran's Project.
Alex and Meredith's friendship ignites jealousy in Jo. Meanwhile, Maggie continues to open up to Richard; Owen wants Callie to use her robotic-limb lab to assist veterans; and Alex and Bailey prepare to face the hospital board.moreless
Maggie tries to prove her worth and befriend others at the hospital, but she lands in some bad predicaments. Meanwhile, Richard doesn't want to disclose his secret; and the doctors assist a dying woman whose daughter won't let her go.moreless
In the 10th-season finale, Cristina's coworkers give her a fond send-off. Meanwhile, a possible terrorist act occurs in Seattle and leads to pandemonium at the hospital; Meredith makes a life-altering choice; and a doctor gets alarming news.moreless
With Derek away, Meredith spends time with Amelia and finds out her true feelings about her time in Seattle. Bailey deals with the ramifications of her actions and Callie receives devastating news. Meanwhile, the residents panic after hearing that one of them will be fired.moreless
Cristina enlists Meredith to help her prepare an acceptance speech for her possible Harper Avery win and while Owen offers to attend the ceremony with her, she insists on going alone. Meanwhile, Derek feels overwhelmed between his responsibilities at home and at the hospital. April and Jackson come to a disagreement on children and religion, and Callie and Arizona try to reconnect in their marriage.moreless
The doctors are exposed to flu-infected patients. Derek prepares to give a speech. A new doctor gives Alex a glimpse into an alternative medical practice.
Cristina thinks about her future. A patient decides whether to live or not.
Bailey asks Richard to join her on the case of a lifetime. Meredith decides to hire a research assistant. Callie shocks Derek. A young pregnant woman needs Shane's help.
Arizona's bad day escalates when she advises a patient on a potential double amputation. Derek breaks a promise. Stephanie and Jo find an abandoned baby. The non-fraternization rule leads to a suspension.