Long ago, Merlin met his true love in refugee "Nimue" and the ripple effects are still being felt by those in present day Storybrooke.
Back in Camelot, Hook, Regina, Robin, Mary Margaret, David and even Zelena attempt to break into the castle to steal Excalibur from a maniacal King Arthur. But will they be able to figure out a way in and which of them will play the hero?
Check out these photos from Once Upon a Time Season 5 Episode 7, "Nimue" scheduled to air Sunday, November 8, 2015 on ABC.
Merlin Falls in Love - Once Upon a Time
When Merlin falls in love with a young refugee named Nimue, everything changes on Once Upon a Time. "Nimue" is the seventh episode of the show's fifth season.
Was the Magic Worth It? - Once Upon a Time Season 5 Episode 7
Merlin looks so completely in love. Was the magic and immortality worth losing Nimue?
A Refugee - Once Upon a Time Season 5 Episode 7
The say Nimue was a refugee. Where was she from and how did she and Merlin first meet?
Our Intrepid Heroes - Once Upon a Time Season 5 Episode 7
Our intrepid heroes plan to break into King Arthur's castle and try to steal back Excalibur.
Getting In - Once Upon a Time Season 5 Episode 7
But it doesn't appear that King Arthur is going to make easy to get in. How will they get past Camelot's iron gates?
They Aren't all Heroes - Once Upon a Time Season 5 Episode 7
Not everyone looking to break into the castle is a hero. They also have Zelena in tow.