In 1931, archaeologists Henrik Mellberg, Francis Beresford-Hope, and Marwell O'Brien discover the Key to the Tomb of the Gods in Norilsk, and divide it between them.

While inspecting the cave he lived in, Beresford-Hope's son Alex, who protects his father's secret, throws dynamite at Jones and Brody because he fears they are Nazis.

After taking the final piece of the Key, Von Hassell betrays Le Roi and cuts her arm, placing her and Jones in a boat with no oars.

Jones escapes by removing his and Le Roi's shirts and lighting them, creating a signal that leads Brody and a whaling ship to rescue them.

There, they engage with Von Hassell's team in a sledge chase, when all of the characters fall into a chasm opened by a crack of lightning.

Jones defeats the men and rescues Brody, and with a horrifying sound, Von Hassell opens the door himself, to reveal a bottomless pit.