|Paul Telfer (left) as Lord Macintosh on Once Upon a Time.|
In a Camelot flashback, a chance encounter with Merlin, David, Hook and Belle gives Merida new hope in her quest to save her brothers from the usurping clans of DunBroch. Unwilling to leave anything up to fate, Merida brings Belle along on a dangerous journey that culminates with an invaluable lesson in bravery.
In Storybrooke, Regina, Mary Margaret and David discover the spell that would allow one of Merlin's chosen to communicate with him, but when Arthur fails to reach the missing sorcerer the heroes grow suspicious. Meanwhile, Emma commands Merida to kill Belle in hopes of forcing Mr. Gold's heroic transformation. With Merida unable to disobey Emma's orders, Gold must find the courage to fight for Belle's life or risk losing her forever.
In the sneak peek below, Merlin (Elliott Knight), David (Josh Dallas), Hook (Colin O'Donoghue) and Belle (Emilie de Ravin) sneak into the dungeon at Arthur's castle to free Merida (Amy Manson) and Lancelot (Sinqua Walls).
The Once Upon a Time cast includes Ginnifer Goodwin as Snow White/Mary Margaret, Jennifer Morrison as Emma Swan, Lana Parrilla as the Evil Queen/Regina, Josh Dallas as Prince Charming/David, Emilie de Ravin as Belle, Colin O’Donoghue as Hook, Jared S. Gilmore as Henry Mills, Sean Maguire as Robin Hood, Rebecca Mader as the Wicked Witch/Zelena and Robert Carlyle as Rumplestiltskin/Mr. Gold.
Guest stars in tonight's episode include Sinqua Walls as Lancelot, Liam Garrigan as King Arthur, Joana Metrass as Guinevere, Amy Manson as Merida, Elliot Knight as Merlin, Paul Telfer as Lord Macintosh, Marco D'Angelo as Lord MacGuffin and Josh Hallem as Lord Dingwall.