When one of them breaks a leg, five friends snowboarding in the Norwegian mountains take shelter in an abandoned ski lodge and soon realize they’re not alone.

After surviving the events in the Jotunheimen mountains in which four of her friends were murdered, the badly injured Jannicke is brought to the local hospital. But when she wakes up, the building is dark and deserted... and she soon realizes that her nightmare isn’t over yet.

Hearing about the Kings Jewels hidden deep in a silver mine, the Junior Olsen Gang embark on a thrilling hunt to prevent the Jewels from landing in the wrong hands.