After an exciting race to Lookout Point to view the Northern Lights, Anna and Elsa arrive to find… nothing. The lights have gone missing! With the help of Kristoff, Sven and Olaf, they embark on a quest to the far north to find them – but will a sudden winter storm stop them in their tracks?

Having survived a sudden storm, Anna, Elsa, Kristoff, Sven and Olaf search for the missing Northern Lights by heading to the highest point in the kingdom: Elsa’s Ice Palace on North Mountain. There, a fleeting glimpse of the lights leads them farther north towards treacherous terrain.

Anna and Elsa and their friends convert Kristoff’s sleigh into a makeshift boat and cross a frozen fjord to reach the Great Glacier – but will they be able to ascend the glacier’s steep incline? If only they could find the right gear this far north of Arendelle to make the difficult climb…

Anna, Elsa and Kristoff finally make it to the top of the Great Glacier where they find Grand Pabbie and learn the cause behind the missing Northern Lights. Can Grand Pabbie restore the lights to the sky so they may relive their happy childhood memories? And will Olaf finally have a chance to try something worth melting for: his first mug of hot chocolate?