On her way to Camelot in the hopes of finding Merlin, Emma runs into a plucky, warrior who may be able to help.

Amy Manson joins the Once Upon a Time cast as Merida, the princess from the movie Brave. Will she be Brave enough to help Emma fight the temptations of darkness?

Apparently Merida isn't the only person Emma runs across in the Enchanted Forest. Will Rumpelstiltskin help Emma get rid of the dark curse or is he simply thrilled to be rid of it himself?

With Rumpelstiltskin, we're never quite sure which side he'll be on. Will he be an ally for Emma or just another obstacle in her path?

Or perhaps Merida will have to use her mad skills with a bow and arrow on him...or anyone else who gets in Emma's way to finding out how to shed the curse of the Dark One. Once Upon a Time Season 5 Episode 1, "Dark Swan" airs Sunday, September 27th on ABC.

Snow and Regina have one basic mission on Once Upon a Time Season 5: How can they return Emma from the Dark side?

When Mary Margaret realizes that Arthur may be the real threat, she has to take matters into her own hands on Once Upon a Time. "The Broken Kingdom" is the fourth episode of the show's fifth season.

Guinevere senses that Arthur is losing his way in his quest to make Excalibur whole again on Once Upon a Time.

Despite her doubts, will Guinevere stick by her king or try to figure out the truth on her own.

Guinevere sets off with Lancelot on her own quest into the heart of darkness on "The Broken Kingdom"

Is Rumplestiltskin still the evil voice inside of Emma's head and if so, will she be able to fight it?

What does Lancelot know about King Arthur? What more has he told Mary Margaret that makes her believe he could be a threat?