Queen Elsa finally stepped foot in Storybrooke and Regina saw her as a new threat in town.

According to The Hollywood Reporter, a new teaser promo for the upcoming fourth season of "Once Upon A Time" shows Queen Elsa (Georgina Haig) walking down the Main Street of Storybrooke and it seems that no one is pleased to see her.

In the new teaser, Elsa is shown in her signature blue gown with her back to the camera. With every step she takes, the ground freezes. Some of the iconic shops in Storybrooke are seen such as Granny's diner, Mr. Gold's shop and some other locations in town.

Previous reports claimed that the "Frozen" storyline in the small screen will pick up where the box-office Disney film ended. Anna (Elizabeth Lail) and Kristoff (Scott Michael Foster ) were busy preparing for their wedding. Elsa and Anna visited their parents' grave, and Elsa gave Anna a surprise for her wedding. Thus, fans will be happy to see Queen Elsa, Anna and Kristoff again as they join the characters in "Once Upon A Time." Reports also added that Queen Elsa will be one of the villains next season, although not a major one. Anna and Kristoff are set to appear in six episodes and Elsa will be in eight.

The fourth season of "Once Upon A Time" will premiere on Sept. 28. introducing the beloved characters in "Frozen." Unfortunately, well-liked Olaf will not be part of the cast, but an actress named Elizabeth Mitchell will be introduced and she will have connections to Elsa and Anna.

The "Frozen" storyline will be featured in the first half of the series and will help establish the evil plot in the second half of the season. Aside from "Frozen," the fourth season of "Once Upon A Time" will also feature the "Maleficent" storyline. The latter topped the box office charts this summer.