As Elsa grieves for her sister, Anna begins to thaw, since her decision to sacrifice herself to save her sister constitutes an "act of true love". Realizing love is the key to controlling her powers, Elsa thaws the kingdom and helps Olaf survive in summer. Hans is deported back to the Southern Isles to face punishment for his crimes against the royal family of Arendelle, while Elsa cuts off trade with Weselton. Anna and Kristoff share a kiss, and the two sisters reconcile. Elsa promises never to shut the castle gates again