ABC is going all-in with advertising the upcoming Frozen invasion on Once Upon a Time as Disney's latest beloved characters come to life.

Elizabeth Mitchell Dazzles In Sparkly Gown In New Set Photos for Once Upon a Time Season 4

The Once Upon a Time Facebook account posted a promotional banner for the fourth season of Once Upon a Time on Sunday, and by the looks of it, it will be a Frozen takeover this fall.

"Awake, Arise, Or Be Forever Frozen," the banner reads in icy blue lettering. The banner also has the hashtag "#OnceIsFrozen" for fans to use in preparation for the new season.

Once Upon a Time Belle's Mother To Be Introduced In Season 4

The Facebook post also included the message "Winter arrives early this fall," a clear nod to Frozen's wintry theme.

Among the Frozen characters set to be featured at some point in the fourth season of OUAT are Elsa (played by Georgina Haig), Anna (Elizabeth Lail), Kristoff (Scott Michael Foster), Hans (Tyler Jacob Moore) and Pabbie the elder troll (voiced by John Rhys-Davies). Unfortunately for fans of Olaf the snowman, he will not be featured in the series.

Meanwhile, Once Upon a Time co-creator Adam Horowitz tweeted a photo of the script for the fifth episode of the season on Saturday. The title of the script reads Breaking Glass.

While not an overt reference to anything obvious, the title could be indicating the return of Sidney Glass/Magic Mirror (Giancarlo Esposito) in this episode. It has previously been reported that Esposito would be returning to the role in Season 4.

Once Upon a Time is set to premiere Season 4 on Sunday, Sept. 28 at 8 p.m. on ABC.

Tags: Once Upon A Time television ABC