TV pick: Once Upon A Time

Sisters Anna and Elsa from Frozen are new arrivals in Storybrooke. Photo / Supplied

It was one of the biggest films of 2013, and remains a favourite with youngsters around the globe, but this week adults can get a taste of what it's all about too, when Once Upon A Time returns for a new season, and makes Frozen's Elsa a key character.

Elsa the snow queen, played by Georgina Haig, was seen arriving into Storybrooke after emerging from Rumplestiltskin's vault in the season three finale, but this season she'll be joined by sister Anna (Elizabeth Lail), Kristoff (Scott Michael Foster) and even his reindeer Sven.

The series' showrunners (Eddie Kitsis and Adam Horowitz) are self-confessed Disney addicts.

"We had seen the movie, fell in love with it, then all our writers saw it and loved it," says Horowitz.

"We were super-inspired and started to get ideas, so we called Disney and asked, 'Can we do this?'"

"It was born out of us wanting to do expensive fan fiction," adds Kitsis.

"But trust me - Disney does not take their most successful franchise and say: 'Hey, will you throw it on a show right away?' They protect it."

Producers are quick to point out that the story arc is not a sequel to the film - rather they will explore the characters' back-stories and how they relate to the Once favourites.

While Anna prepares for her wedding to Kristoff, viewers will find out how Elsa ended up in the vault of Rumplestiltskin.

Though she is expected to spark a power battle with the Evil Queen/Regina, Elsa may find a friend in Emma, played by Jennifer Morrison, who says she can see some similarities between the two.

"Elsa is someone Emma's very intrigued by because she doesn't have control over magic the same way Emma doesn't have control over her magic and it's not something either of them asked for."

And that's not all for Frozen fans.

The new Cinderella movie has a Frozen short titled Frozen Fever screening before it in cinemas.

Once Upon A Time
When: Wednesday, 9.30pm
Where: TV2
What: Frozen fairytale crossover

- TimeOut