King of Anything

One year after the end of Queen Elsa's coronation, Princess Anna weds her beloved Kristoff. It ends up being a perfect fairy-tale wedding, but after it's over, Anna and Elsa discover a dark secret left behind by their parents. Fearing for the worst, Anna leaves Arendelle to look into it without telling Elsa. Once she discovers her sister is gone, Elsa leaves in search of her, but quickly ends up deep in danger and is rescued by a mysterious stranger. Although she survives, there is still much trouble ahead of her. What is this family secret? How will it affect Arendelle? And who is this mysterious stranger who does nothing but get on Elsa's nerves?