Actors Ginnifer Goodwin And Josh Dallas, Right, From The TV series 'Once Upon A Time.'
Actors Ginnifer Goodwin and Josh Dallas (R) from the TV series "Once Upon A Time&" arrive at the 15th Annual Costume Designers Guild Awards in Beverly Hills February 19, 2013. Reuters

"Once Upon A Time" Season 4, Episode 3, titled "Rocky Road," airs Sunday, Oct. 12, on ABC. Queen Elsa meets the Snow Queen, as announced by the voice-over in ABC's OUAT 4x3 promo video. Emma Swan is about to test her magic again as the season's first big bad emerges.

Spoiler alert: This feature contains spoilers on Once Upon A Time Season 4. Read at your own risk if you have not watched the previous week's episode. Watch the ABC promo video below.

The title of Once Upon A Time Season 4, Episode 3, "Rocky Road," is believed to be referring to: one, the Snow Queen's ice cream shop in Storybrooke, and two, the metaphor for Emma Swan (Jennifer Morrison) and the residents of Storybrooke/Enchanted Forest.

The previous episode revealed that Anna (Elizabeth Lail) is alive. This is great news for Queen Elsa (Georgina Haig), who is clueless that the Snow Queen exists. The Once Upon A Time Season 4, Episode 3 video shows "Lost" alum Elizabeth Mitchell in her costume as the evil Snow Queen.

Meanwhile, the story of Rumplestiltskin/Mr Gold's (Robert Carlyle) and Belle (Emilie de Ravin) in this new season has been mildly launched, but Rumbelle shippers have yet to see more of the couple. It has been hinted, however, that Rumple may have taken something from Anna in her quest to find answers about the late king and queen of Arendelle.

Regina (Lana Parrilla) is still struggling with the reappearance of Robin Hood's (Sean Maguire) wife. She pushes Henry (Jared S. Gilmore) away, but he realizes he belongs to a family that does not give up. The (former) evil queen intends to find the author of the fairy tale book to give herself a happy ending.

From the promo video, the evil queen seems to be gauging the mighty powers of the Snow Queen. OUAT fans hope to see Regina and Emma team up with Elsa in Once Upon A Time Season 4, Episode 3. Supporting the ladies would be Captain Hook (Colin O'Donoghue), who is officially in a relationship with Ms Swan. In the midst of this fight, Prince Charming (Josh Dallas) and Snow White (Ginnifer Goodwin) help out to find Anna.

WATCH: Once Upon A Time Season 4, Episode 3 Promo Video | 'Rocky Road' ABC on YouTube

Once Upon A Time Season 4 airs Sundays on ABC.

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