Frozen's Elsa & Anna Get Ready For A Trip To Storybrooke In New 'Once Upon A Time' Photos

Elsa gifts Anna with a very important dress in this new still from Once Upon A Time‘s season four premiere.

In “A Tale of Two Sisters”, a scared and confused Elsa (Georgina Haig) finds herself in Storybrooke and, fearful of the intentions of its residents, creates a powerful snow monster for protection.

With Robin Hood’s (Sean Maguire) wife, Marian (Christie Laing), back in the picture, Regina (Lana Parrilla) wonders if her “happily ever after” with the former thief has been completely quashed; while on their honeymoon, Mr. Gold (Robert Carlyle) finds an intriguing object that makes him question whether or not he should officially give Belle (Emilie de Ravin) control over the dagger that makes him The Dark One, and Hook (Colin O’Donoghue) is dismayed to discover that Emma (Jennifer Morrison) seems to be avoiding him while she tries to help comfort Regina after being the one responsible for bringing Marian back from the past and into Storybrooke.

Meanwhile, in Arendelle of the past, as Elsa’s sister Anna’s (Elizabeth Lail) wedding to Kristoff (Scott Michael Foster) nears, Anna discovers that their parents – who died on-ship during a violent storm – were heading to a mysterious destination in a quest that may have held the secret to containing Elsa’s out of control Ice powers. And against Elsa’s wishes, Anna wants to finish their journey to find out what they were looking for.

“A Tale of Two Sisters” airs Sunday, September 28th @ 8PM ET/PT on ABC.

20+ pics from Once Upon A Time inside…