The movie opens in a dark cave as old man Silas Hunter and Ivan Bloodtooth fight over the map to the Flame of Eternity. It turns out Ivan has the Crown of Surtur and if he puts it in the flame it will resurrect Surtur and start Ragnarok. About 4 years prior Ivan and his brother Liam were spoken to in a dream by Surtur to resurrect him. Now Ivan is trying to steal the map from a treasure hunter named Silas Hunter. Ivan takes the map and cuts Silas's arm and escapes. Just then Silas's grandson Carter Hunter shows up and gets Silas out of the cave. Throughout the rest of the movie Silas, Carter, and Carter's friend and girlfriend Jacob and Ava chase Ivan and his brother and eventually have to travel through a huge underground city to get to the vault of Surtur. Once they get there Silas goes in to fight them while Carter and Jacob try to steal the crown. Eventually Ivan puts the crown in the flame but Silas gets it out causing not Ragnarok but a large earthquake destroying the city and killing Silas, Jacob, and Ivan. Carter and Ava see this and escape the cave while Liam vows revenge. Once they get out of the cage Liam shoots Carter in the head and runs away. Ava goes to check on Carter but he's fine. Carter looks in his hand and sees a glowing ring.
