Putting her trust in him, Elsa tells Kristoff that after she is gone, he must find Anna and save Arendelle. Desperate, she promises the urn to Hans, and then apologizes to Kristoff for not listening earlier. Elsa counters with ice magic, but Hans threatens her with Kristoff's life.

Just then, Hans and his three brothers surround them. He insists, but she, trusting her own judgement, declines. While Kristoff hastens her to destroy it, Elsa refuses out of curiosity about ancient words written on the urn, which may have information about others like her. Elsa decides she should come with him, and together they venture into the North Valley where the urn is in a cave. Kristoff suggests he, accompanied by a few soldiers, will destroy the urn. Wishing to avoid war, she begins brainstorming plans when Kristoff returns, after disobeying her prior orders, and informs them of Hans' scheme to use an urn, capable of trapping magic users, to imprison Elsa. Kristoff offers to sneak up there and eavesdrop on the princes' plans, but Elsa wants to handle the situation herself. To her distress, she finds out Prince Hans and his twelve brothers are amassing an army in the Southern Mountains to attack Arendelle.

She even thinks about going after Anna, but Kristoff convinces her that Arendelle needs their Queen. (' A Tale of Two Sisters')ДЄfter Anna leaves for the Enchanted Forest, Elsa worries about her sister's well-being and sends scouts to look for her. He then explains that she might know it as what the inhabitants call it, which is the Enchanted Forest. Kristoff reassures her that Anna will be all right, but Elsa argues that her sister doesn't know how dangerous Mist Haven is, even though she herself hasn't heard of such a place. After bluffing badly, he admits Anna booked a trip to Misthaven, and though Elsa rushes to the harbor, the ship has already left. Later, after being unable to find her sister, Elsa turns to Kristoff for answers. When Anna suggests going there together to unlock the mystery, Elsa refuses the idea. He can only tell them that their parents had gone to a place called Mist Haven. Believing this is all just a misunderstanding, Anna takes Elsa to the rock troll, Grand Pabbie, hoping that he has answers. Believing she herself caused their deaths, Elsa flees into the forest where Anna comforts her. Though it has always been believed their parents had perished on a diplomatic journey, the book ambiguously alludes their reason for leaving was due to Elsa's powers. As Anna tries on the gown, Elsa discovers their mother's diary. To add a touch of 'something new', she also gifts Anna a snowflake pendant, which was their mother's. After visiting their parents' graves, she surprises Anna, who is set to marry Kristoff, with their mother's old wedding dress. Upon their parents' demise during an ill-fated sea voyage, Elsa becomes Queen.

Elsa is born to Queen Gerda and an unnamed King of Arendelle, and her younger sister is Anna.

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