Georgina Haig

Once Upon a Time brought an icy chill to Ballroom 20 at Comic-Con on Saturday morning, showing off the first footage from Season 4 that featuresFrozen's Anna (Elizabeth Lail) and Elsa (Georgina Haig).

In the clip, the girls hold hands before their parents' gravestones. Elsa tells Anna that they would've been so proud of her, to which Anna replies that they would've been proud of them both. Arendelle is bright and sunny — no winter in sight — when Elsa tells Anna that she has a surprise for her wedding.

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The clip was met with great applause, as were the small tidbits executive producers Adam Horowitz and Edward Kitsis dropped about the new season. Check them out below:

Hope for RumBelle? Even though Rumple (Robert Carlyle) lied to Belle (Emilie de Ravin) about the dagger so he could kill Zelena (Rebecca Mader), Carlyle still believes that Rumple genuinely loves her. "Rumple is such a complex character. He's an addict and he's addicted to power and addicted to magic," he said, noting that the dagger may come back into play again. "I think she's going to be quite devastated," de Ravin said of when Belle does eventually learn of his deception.

Will Emma become Target No. 1 again? After bringing Robin Hood's (Sean Maguire) long-dead wife Marion back from the past, Emma (Jennifer Morrison) will be desperate to prevent Regina (Lana Parrilla) from turning back into her old self. "I can't apologize for saving a life and also I'm horrified that I've gotten in the way of Regina's happiness," Morrison said. "We all become concerned that it might make her spiral back into some of her old ways. Emma is going to be very determined to keep her in the good place in her life and keep something positive between them."

Old habits die hard: Despite Emma trying to keep Regina calm, it's not long before the Evil Queen resurfaces. In a special clip shown during Comic-Con, Regina is seen making her way to the deep recesses of the Storybrooke psychiatric hospital, where she seeks out Sidney Glass (Giancarlo Esposito) — whose return was first reported by TVGuide.com. "There's someone standing in the way of my happiness," Regina says in the clip. "I need your help getting rid of them." 

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 Emma and Hook's happiness: It sounds like things will be going pretty well for the couple, but that won't necessarily be the focus of the new season. "It's not really about her relationship," Horowitz said. "It's about her finding herself." For Hook, however, "he realized he could find love again,"Colin O'Donoghue added. Speaking of Hook, he will finally be getting a new outfit this season! As for Emma's former love, Kitsis noted, "Neal will always live in flashbacks and in our heart." 

Henry's first job: With Neal (Michael Raymond-James) dead, Mr. Gold will look to Henry (Jared Gilmore) as a second chance for a relationship with family. "Henry's going to go into the family business for a little bit," Kitsis said. "I'm talking about the pawn business. Mr. Gold looks upon Henry and says, 'This is my son's child,' and I think that he has a deeper affection."

Once Upon a Time returns Sunday, Sept. 28 at 8/7c on ABC.

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