chunk: Declared a monster by the Duke, a panicking Elsa flees the castle, while inadvertently unleashing an eternal winter on the kingdom. High in the nearby mountains, she abandons her restraint, vowing to never return and building herself a solitary ice palace ("Let It Go"). Meanwhile, Anna leaves Hans in charge of Arendelle and sets out in search of her sister, determined to return her to Arendelle, end the winter and mend their relationship. While obtaining supplies from 'Wandering Oaken's Trading Post and Sauna', Anna meets Kristoff and Sven ("Reindeers Are Better Than People"). She convinces Kristoff to guide her up the North Mountain. On their journey, the group encounters Olaf, Anna and Elsa's childhood snowman whom the latter recreated and unknowingly brought to life. Olaf dreams of seeing and experiencing summer for the first time ("In Summer"). He then leads them to Elsa's hideaway.