Regina steps up in an unexpected way to protect Emma; a celebration at Camelot turns deadly; Hook tries to bring Emma back to the light.
Emma, David, Regina, Robin and Henry are finally back home in Storybrooke and reunited with Snow, but, unfortunately, they still have to contend with Hades, who continues to deceive Zelena as he lays out his plan.
The town blames Elsa when a fatal icy spell is cast on Marian, not knowing that another resident has the same powers, and Mary Margaret struggles to balance motherhood and leading the town.
Those searching for Emma receive help from unexpected allies; Emma struggles to resist her dark urges as she tries to find Merlin before her transformation is complete.
The group continues their urgent quest to find Peter Pan's hideout and save Henry. Hook suggests tracking down Tinker Bell in the hope that she will lead them straight to his camp.
