Once, the royal princesses of "Frozen" feared Elsa's powers were too much for the world. Now, Elsa and Anna must hope they are enough.

The first full-length trailer for "Frozen 2" debuted on "Good Morning America" Tuesday morning (the teaser came out in February).

The highly anticipated sequel to the 2013 animated hit ponders the question of why Elsa (Idina Menzel) was born with magical powers. The answer is calling her and threatening her kingdom. Together with sister Anna (Kristen Bell), woodsman Kristoff (Jonathan Groff) and snowman Olaf (Josh Gad), they set out on a dangerous but remarkable journey.

As the troll king advises, "The past is not what is seems. You must find the truth. Go North, across the enchanted land and into the unknown."

In the unknown, it looks like there are many new creatures, including a
Nokk, described by Disney as "a mythical water spirit that takes the form of a horse."

Chris Buck and Jennifer Lee return to direct, with new songs by Oscar winners Kristen Anderson-Lopez and Robert Lopez.

"Frozen II" opens in theaters November 22.