‘Once Upon A Time’ Season 4 Trailer: See New Video Showing ‘Frozen’s’ Anna, Elsa And Olaf!

A special sneak peek clip was revealed for "Once Upon a Time" season four during ABC's special "The Story of Frozen: Making a Disney Animated Classic." The ABC special focused on the inspiration and animation of "Frozen," which took 70 years to make it to the big screen.

But that is not all, the feature shared a glimpse from the first story arc of season four of "OUAT." The "Frozen" half of "Once Upon a Time" will focus on Anna and Elsa's relationship plus what they will have to deal with in Storybrooke. The promo clip featured characters from Disney's "Frozen" including the sisters, Olaf plus the original cast of "OUAT."

Hypable reports creators of "Once Upon a Time" didn't want to create another classic Disney villain with Elsa and infact the song "Let It Go" was the force behind the change. Instead, the season will focus on the sisters relationship and Elsa struggle with her freezing powers. The show will take a look at life after "Frozen" picking up with Anna and Kristoff's coming wedding! Check out the awesome clip below:

If you missed anything or just want to catch up season three of "OUAT" is streaming on Netflix. You can also watch an encore episode of the season three finale, “There’s No Place Like Home,” airing Sunday, September 21 on ABC at 8:00 p.m.. ET.

You can catch the season four premiere of "Once Upon a Time," “A Tale of Two Sisters,” Sunday, September 28 at 8:00 p.m.. ET on ABC.