Watch 'Once Upon A Time' Season 4 Extended Trailer [VIDEO] Prepare For Juicy Spoilers

Once Upon A Time returns to ABC on September 28 and this time around there's even more magical drama. The new and extended trailer of the hit fairytale drama gives more insight into season four of the show and it's going to be epic.

Season four begins with the episode "A Tale Of Two Sisters" where we will meet Queen Elsa and her sister Anna from Disney's Frozen. With the Ice Queen's arrival to Storybrooke, the Evil Queen (Lana Parrilla) feels the pressure to remove her newest competition. The Magic Mirror even makes a cameo in the trailer, which is never good news when paired with Regina's evil side.

Despite Regina's ability to beat anything that gets in her way, Elsa isn't going to go down without a fight. "When [Elsa] arrives in Storybrooke in the present day, she'll protect herself from the town's residents by creating a powerful snow monster," Entertainment Weekly reported.

After reminiscing about past characters, the extended promo shows that the battle between good and evil is still live and well. If you remember, we ended last season with the return of Robin Hood's wife Marian, which broke Regina's heart yet again. With so much anger, her revenge is sure to be deadly.

According to writer and producer Eddy Kitsis, season four 's theme is "Never give up on the people you love," which could be geared towards Regina and Robin Hood.

"It's going to be complicated and messy, but we hope it's not a mess," Eddy exclusively told TVLine.

The video also shows Emma Swan (Jennifer Morrison) preparing for battle. "This isn't over," she says. Hook quickly responds, "It never is!"

The high note of this clip is a sweet and special Beauty and the Beast-type dance between the adorable Belle and Rumplestiltskin. This season will find Rumple debating whether or not to actually let Belle control the real dagger, while we dive into Belle's past.

"For the first time, we'll delve into Belle's past pre-the encounter with Rumple," executive producer Adam Horowitz told Entertainment Weekly.

What are you most excited to see in season four of Once Upon A Time?