Mr. Gold (Robert Carlyle) is out for revenge on the people of Storybrooke, and he has no qualms about hurting Belle (Emilie de Ravin) who is with child. Meanwhile, Jaime Murray will appear as the Black Fairy.

In the upcoming ninth episode of "Once Upon a Time" season 6 — titled "Changelings" — Rumple is hellbent on exacting revenge. He is out to get everyone in Storybrooke, including Belle and her unborn child as seen in the episode promo.

According to the synopsis released by The Futon Critic, "In a Fairy Tale Land flashback, Rumple collects Jack (Nick Hunnings) and Jill's (Tammy Gillis) son as bait to lure a powerful being to him. Back in Storybrooke, Gold tells the Evil Queen (Lana Parrilla) that she must kill Zelena (Rebecca Mader), and the EQ makes a decision that will change her relationship with her sister forever. When Belle discovers Gold's plans for their son, she convinces Hook (Colin O'Donoghue) and Emma (Jennifer Morrison) to help her steal squid ink that can immobilize him, and, as a result, Belle is left to make a sacrifice that will affect the lives of everyone in Storybrooke."

The episode will also reveal a little about how Jasmine (Karen David) and Aladdin (Deniz Akdeniz) are doing in trying to save Agrabah, which will involve a genie-less lamp.

Aside from unleashing his rage on Storybrooke, Gold will have a heartbreaking moment with Belle. Executive producer Adam Horowitz revealed a snippet of Gold and Belle's script for episode 9 on his official Twitter account, showing that Gold will bare his heart out to Belle about not being the man she expects he is and deserves to be with.

Meanwhile, TV Line reports that "Dexter" star Jaime Murray will be appearing as the Black Fairy in "Once Upon a Time" season 6, episode 9. It is possible that she will help Belle and the gang find a way to stop Rumple and his evil plans from happening in Storybrooke.

"Once Upon a Time" season 6 returns on Sunday, Nov. 27, at 8 p.m. EST on ABC.