When a prophecy traps a kingdom in eternal winter, Anna, a fearless optimist, teams up with extreme mountain man Kristoff and his sidekick reindeer Sven on an epic journey to find Anna's sister Elsa, the Snow Queen, and put an end to her icy spell. Encountering mystical trolls, a funny snowman named Olaf, Everest-like extremes and magic at every turn, Anna and Kristoff battle the elements in a race to save the kingdom from destruction.

"Long ago, in a time forgotten, a preternatural event threw the seasons out of balance. In a land where summers can last decades and winters a lifetime, trouble is brewing. The cold is returning, and in the frozen wastes to the north of Winterfell, sinister and supernatural forces are massing beyond the kingdom's protective Wall. At the center of the conflict lie the Starks of Winterfell, a family as harsh and unyielding as the land they were born...