Anna launches her and Elsa into another adventure, she just can't help it! Her curiosity bubbles over after hearing her mother's lullaby about a secret white river and all the mysteries it contains.

A new trailer for Disney's "Frozen 2" debuted on "Good Morning America" this morning, and the world surrounding Arendelle is about to get a whole lot bigger. In the sequel, Elsa, Anna, Kristoff and ...