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Fans are preparing for a chilly return to Storybrooke when Once Upon a Time gets a Disney Frozen makeover on Sept. 28.

In the premiere episode “A Tale of Two Sisters,” Elsa discovers an unsettling family secret on the eve of her sister’s wedding which threatens to ruin her happiness.

But when Anna tries to help, a chain of events is set in motion that leads one sister into peril and the other to Storybrooke in search of answers.

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Meanwhile, as Emma tries to console a jilted Regina, the former Evil Regal comes up with a plan to secure her own personal happiness – at any cost.

And when the newly married Golds discover the perfect romantic Honeymoon retreat, the promise of a fresh start soon begins to turns sour.

And if that’s not enough to whet your appetites for the premiere there are always these brand new sneak peek clips to keep you going until Sunday Sept. 28 on ABC.