With characters from Disney's hit movie Frozen invading the ABC series Once Upon a Time this fall, the network has released a new trailer showcasing Elsa (Georgina Haig) arriving in Storybrooke for the first time.

Watch as your favorite Once Upon a Time characters such as Rumplestiltskin (Robert Carlyle), Mary Margaret (Ginnifer Goodwin), David Nolan (Joshua Dallas), Captain Hook (Colin O'Donoghue), Regina Mills (Lana Parrilla) and Emma Swan (Jennifer Morrison) react to Elsa's arrival before the Season 4 Premiere debuts Sunday, September 28 at 8 PM ET on ABC.

Not much is known about how the Frozen world will connect to the magical world of Once Upon a Time's Storybrooke, but Georgina Haig's Elsa will be joined by other Frozen characters such as Anna (Elizabeth Lail), Kristoff (Scott Michael Foster), Hans (Tyler Jacob Moore), the rock troll Pabbie (John Rhys-Davies) and Elizabeth Mitchell as a mysterious and villainous character who has ties to both Storybrooke and Arendelle.