Maggie reflects on her life when her old beau gets married. Meanwhile, Bailey's allegiance is questioned by Richard; Jo tells Stephanie a secret she's been hiding from Alex; and Alex faces a tough decision regarding newborn twins.moreless
In the 11th-season finale, the doctors are busy dealing with the aftermath of a disaster, which bonds them as it reminds them about what to prioritize in life.
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
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
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.
The doctors try to cope with the heartache and injuries caused by the plane crash; everyone at Seattle Grace struggles to return to normalcy amidst the chaos.
The residents agonize over their oral boards, reliving every answer they gave during their exams; Arizona's close childhood friend comes to Seattle Grace for medical help; the doctors work on a patient who is missing one third of his skull; and Julia asks Mark to start a family with her. Meanwhile Catherine tells Richard that one of his residents has failed.moreless
Derek asks Meredith to work with him in neuro again; Catherine Avery comes back to Seattle Grace and takes an interest in Richard; Cristina becomes increasingly suspicious of Owen; Morgan may be falling for Alex.moreless
As Meredith puts Zola to bed and falls asleep, she begins to wonder -- what if her mother had never had Alzheimer's and she'd had loving, supportive parents? The reverberations of a happy Meredith Grey change the world of Seattle Grace as we know it. What if she had never met Derek in that bar and he had never separated from Addison? What if Callie and Owen had become a couple long before she met Arizona? And what if Bailey never evolved from the meek intern she once was?moreless
The Chief makes a career-changing decision that shocks Seattle Grace Hospital; Cristina and Owen try to find normalcy in their relationship; April continues to struggle in her new role; and the 5th year residents are given their first solo surgeries, only to find out that even the most routine procedures aren't always easy.moreless
Everyone pulls together to help Callie and baby Sofia on their painstaking journeys to recovery in hopes of allowing mother and baby to finally meet; the sudden death of a clinical trial patient has Derek proceeding with more caution while Meredith makes a calculated and risky move; Alex treats a cranky old rich woman dying of cancer and gets an idea for a grandiose endeavor that is sure to get him the Chief Resident spot; and Teddy is pleasantly surprised by the return of a familiar face.moreless