Erik is on an expedition in the caves of Norway with the legendary Professor Graham Lindgren when they stumble upon a hidden passageway covered in ancient runes leading to a long-sealed chamber. Their excitement quickly turns to dread when an earthquake strikes, trapping them in the heart of the mountain. Desperate to locate her missing father, Graham’s daughter, Sarah Lindgren, and her partner, Reggie, arrive in Norway, joined by Harvey Bennett—only to find themselves caught in a deadly pursuit with a ruthless organization determined to claim whatever treasure Graham’s team has unearthed."