In the immediate aftermath of shocking events at the clinic, the hospital goes on lockdown and the Grey Sloan doctors split up to save multiple lives. Meanwhile, Maggie lands in hot water with Winston, and Jules' roommate makes a surprise appearance. 

It's Maggie's last day. Amelia's relationship with Kai is tested, and Ben worries as Bailey's doxing intensifies. With Levi's help, a patient celebrates a milestone. Jo processes a difficult diagnosis, and Maggie and Winston decide their future.