Policeman Salmander loses his job in Oslo and must spend dismissal time in Hellfjord, a shit hole of a place far north in the country. As soon as he arrives, strange things start to happen in Hellfjord, and the seemingly quiet place turns out to conceal dark secrets.

Salmander goes undercover in Solvik jail to follow a lead in the murder case. When his only ally in prison dies from a peanut-related accident, Salmander is put behind bars for real. Not only must he follow a trail in the case, he must also find a way to get out of prison. Meanwhile, Johanne finds a very special clue in Hellfjord's murder mystery.