What if Anna and Elsa never knew each other? Following the unexpected death of her parents, Elsa finds herself the sole ruler of Arendelle and mysterious powers begin to reveal themselves. Elsa starts to remember fragments of her childhood that seem to have been erased, pieces that include a familiar-looking girl. Determined to fill the void she has always felt, Elsa must take a harrowing journey across her icy kingdom to undo a terrible curse … and find the missing Princess of Arendelle.