"Broken Heart" is the tenth episode of the fifth season of the American fantasy drama series Once Upon a Time, which aired on November 29, 2015.

In this episode, Hook challenges Mr. Gold to a sword fight on the Jolly Roger, while Emma Swan and Henry get the memories of the past six weeks back.

David expresses his frustration at being thwarted when they were so close to wiping out the Darkness, but Mary Margaret reminds him that they would have chosen to save their loved ones in any situation, which Emma did.

Hook tells her that he had always trusted her, and that he was the one who told Emma's parents that she had to decide on her own not to crush Merida's heart in the past, before disappearing.

As Merlin was finishing the message that would be later be received in Storybrooke, Hook appears and locks the doors, revealing that he planned to cast another Dark Curse in order to get his revenge on Gold.

Hook says that he had always planned to get his revenge on Gold, and adds that no one will ever control him again, before sending Excalibur back into the Stone to ensure this.

However, Hook states that it was her "lovesick puppy dog" "Killian Jones" who had fallen in love with her, claiming that his former self was killed when she "turned him into a Dark One."

Then, at the behest of the manifestation of Rumplestiltskin, Emma brings her parents, Henry, Regina, Robin, Belle, their friends and Zelena (whom she reinstalled the magic-inhibiting cuff on) back to Granny's Diner in an unconscious state, before using the dreamcatcher to erase all of their memories, and to add a forgetting spell to the Curse, to keep Hook from ever finding out that he was a Dark One.

Upset over what she did to him, Hook takes the dreamcatcher to erase Emma's memories of the events in Camelot, while Zelena places the anti-magic cuffs on her.

Mary Margaret, David, Henry and Regina arrive to find Emma unconscious on a couch, and powerless.

Vowing that they will never be a family, Robin tells Zelena he will allow her to visit the child, as long either he or Regina are present.

Regina asks Merida to keep an eye on Emma, only to have Hook appear in front of the archer and knock her out.

When Emma asks Hook what he plans on doing, he replies by saying that since he was now the Dark One, he was a "free man" and now sought revenge on Mr. Gold.

He tells her that each time Emma is in trouble, she pushes away all of her loved ones, including Hook, because she thinks that she can solve all of her problems on her own, and that this trait will keep her as an "orphan" forever.

This gives Henry and Emma enough time to find the dreamcatchers, which happen to be located inside the clock tower, only for them to discover that they are protected by a spell.

Hook opens the portal and summons all of the previous Dark Ones (minus Rumplestiltskin), led by Nimue, to aid him in destroying light magic.

Which is good because those memories are definitely going to come in handy with what currently is threatening Storybrooke..."[2] Amy Ratcliffe of IGN said of the episode, "This week's Once won the day in the small moments.

Years of fleshing out characters and their relationships paid off in scenes like the one with Henry and Emma reconciling and Regina bringing Zelena over for a visit with her daughter.