By Jessica Michele Herring (staff@latinospost.com) | First Posted: Aug 26, 2013 04:54 PM EDT

The third season of "Once Upon a Time" is promising to be another exciting trip into the world of classic fairytale characters and their human counterparts. TVLine reports that series co-creator Eddy Kitsis said that season three's eleven episode trip to Neverland will be like a cinematic journey. 

Kitsis referred to it "as its own season, like one giant movie."

"And like any adventure movie, there's romance, there are things that are terrifying, and there are things that are heartbreaking," Kitsis continued. "That was always our goal, to have that big, summer movie feel." Kitsis further added that there will be "uplift, romance, action and quieter moments."

Co-creator Adam Horowitz added, "The best kind of roller coaster is the one that goes through all of that stuff."

Horowitz also shared that, like many things that are too good to be true, the magic that Robin Hood (Tom Ellis) used to heal Marian (Christie Laing) came at a price. "There's a price - and a debt," Horowitz said. 

E! Online reports that British actor Sean Maguire has joined the cast as the Prince of Thieves for season three, replacing Ellis, who was not able to return for the third season. Although Robin Hood only appeared in one episode in season two, he quickly earned a spot on Rumplestilskin's (Robert Carlyle) list of enemies. Robin Hood will have at least a four-episode arc, in which he will reaffirm his alliance with Belle (Emilie De Ravin). 

JoAnna Garcia Swisher of "Reba" also recently joined the cast as iconic mermaid Ariel. Ariel will have ties to a character that the audience already knows. "She's somebody who wants to see the world," Kitsis said about Ariel. "That spirit will run in her DNA still, but we'll meet her in a surprising way."

Viewers will most likely meet her in Neverland, where there will be other mermaids who may not be so friendly. It is also rumored that the audience will soon meet Prince Eric. 

"Once Upon a Time" premieres on Sunday, September 29 on ABC.