A heavy snowstorm, a train collides with an avalanche forcing passengers to shelter in an isolated mountain hotel. A suspended police officer finds herself investigating mysterious murders occurring there.

Ida has just arrived in Oslo to study psychology at the University, after dropping out of her literature studies in Trondheim. Ida's is anxious for most things. Not getting of the bus at the right stop, running out of toilet paper on the public toilet, environmental changes and world war three. But her greatest fear is terror. There is nothing that frightens her more than being a victim of a random attack.

Thale (17) has just moved with her parents to a small town after her mother has a new job in the local police. After a student is killed brutally at a party Thale attends, she becomes a key witness. Was the killer an animal? A wolf?