The doctors of Grey Sloan Memorial Hospital deal with life-or-death consequences on a daily basis -- it's in one another that they find comfort, friendship and, at times, more than friendship. Together they're discovering that neither medicine nor relationships can be defined in black and white. Real life only comes in shades of grey.
Amelia and Owen deepen their relationship; Alex has a clearer view of his future with Jo.
Alex and April assist a pregnant teen going through a medical crisis; Callie and Arizona butt heads.
Stephanie has difficulty with boundaries; Callie and Arizona turn to their friends for support.
Callie tries to make a decision about Sofia's future without consulting Arizona.
Miranda continues to deal with the aftermath of Ben's reckless decisions; April and Jackson try to put their differences aside.
A missing child forces the hospital into lockdown; Ben puts Bailey in a difficult situation.
Meredith goes on a ride to pick up a heart for a transplant; a musician who has MS is admitted.
Meredith regrets taking a step forward with Will; Maggie feels disconnected from Andrew.
Jackson finds out about April's pregnancy; Alex and the doctors tackle a triple organ transplant surgery; Meredith thinks about getting back into dating; Andrew requests no special treatment.
Richard throws everyone for a loop when he switches the resident and attending pairings, and Arizona takes a huge risk on a woman who is pregnant with quadruplets. Meanwhile, April is faced with a difficult decision.
Meredith, Bailey, Jackson, Callie and Jo travel to a military hospital to perform a risky surgery.
A patient from Meredith's first surgery is re-admitted to the hospital with an aneurysm.
A patient attacks Meredith; after Penny learns what happened, the doctors rush to save Meredith.
As gossip and speculation continues to spread about Owen and Riggs, a wildfire sends many firefighters to the hospital.
Bailey urges Ben to ask their roommate to leave; Arizona wants to start dating again.
A new resident transfers to Grey Sloan Memorial; Richard is uncertain how to advance his relationship with Maggie; a young boy from the Middle East needs treatment.
Maggie ditches cooking duties at the sisters' dinner party to rush to the hospital.
Stephanie reveals her past. Owen suggests the interns learn how to break bad news to patients’ families, and Arizona’s patient reassures her that she’s destined to find love again.
A wedding invite makes Maggie reevaluate life choices; Richard questions Bailey's loyalty; Jo confides in Stephanie, and Alex is faced with a difficult decision.
Bailey tackles her first day as Chief; April’s marriage is in jeopardy and she finds herself unable to address her problems; Meredith struggles to juggle her responsibilities and Amelia works to define her relationship with Owen.
The doctors treat two young girls who have a powerful story; Meredith adjusts to her new roommates; Bailey fights for the chief of surgery position; Jackson readies himself for April's return.