ie ▁inform s ▁that ▁they ▁must ▁set ▁things ▁right ▁by ▁discover ing ▁the ▁truth ▁about ▁the ▁past . ▁ ▁El sa , ▁Anna , ▁O la f , ▁Krist off , ▁and ▁S ven ▁emb ark ▁to ▁the ▁En ch anted ▁Forest , ▁following ▁the ▁myster ious ▁voice . ▁After ▁the ▁mist ▁parts ▁at ▁El sa ' s ▁touch , ▁the ▁Air ▁spirit , ▁in ▁the ▁form ▁of ▁a ▁torn ado , ▁appears ▁and ▁swe eps ▁everyone ▁in ▁its ▁vor tex . ▁El sa ▁stops ▁it , ▁forming ▁a ▁set ▁of ▁ice ▁sculpt ures . ▁The ▁sister s ▁discover ▁the ▁sculpt ures ▁are ▁images ▁from ▁their ▁father ' s ▁past . ▁They ▁encounter ▁the ▁North uld ra ▁and ▁a ▁tro op ▁of ▁Ar end elli an ▁soldiers ▁who ▁are ▁still ▁in ▁conflict ▁with ▁one ▁another . ▁When ▁the ▁Fire ▁spirit ▁appears , ▁El sa ▁disco vers ▁the ▁spirit ▁to ▁be ▁an ▁ag itated ▁mag ical ▁sal am ander , ▁and ▁cal ms ▁it ▁down . ▁El sa ▁and ▁Anna ▁ar range ▁a ▁tr uce ▁between ▁the ▁soldiers ▁and ▁the ▁North uld ra ▁after ▁discover ing ▁that ▁their ▁mother , ▁Queen ▁Id una , ▁was ▁a ▁North uld ran ▁who ▁had ▁saved ▁Ag n arr , ▁an ▁Ar end elli an . ▁They ▁later ▁learn ▁the ▁existence ▁of ▁a ▁fifth ▁spirit ▁who ▁will ▁un ite ▁the ▁people ▁with ▁the ▁magic ▁of ▁nature . ▁ ▁El sa , ▁Anna , ▁and ▁O la f ▁continue ▁to ▁head ▁north , ▁leaving ▁Krist off ▁and ▁S ven