Playing Hero

AU Modern day HELSA story. It's Hans' birthday and he has invited both girls to his party. Elsa, has every reason to hate him and bans Anna from going. Fed up with her sister's overprotectiveness, Anna sneaks to the party against Elsa's wishes. Forced to go after her, Elsa, along with Anna's best friend, Kristoff end up in mortal danger when Han's is a victim of a home invasion.