Nina lives in Rovaniemi due to Venla's school and her mother's cancer. A former hockey player once accused of murdering his wife disappears. Irina, a prostitute previously rescued by Nina, is contacted.

Irina's murder makes Nina join the new Finland-Russia police unit. Nina travels to Murmansk with her new partner Viktor. The International Secret Society is preparing to start the hunting week.

The tailbone found by Nina and Viktor leads them to the desert, where they end up witnessing a human hunt. However, the police are caught. The director of the secret society invites them to dinner.

Nina and Viktor manage to escape from the monastery. Nina promises to return to Kajante. Russian police lead promises to arrest hunters. Nina is shelved because she had left for Murmansk without permission.

Nina and Viktor investigate the murder of the old Lahti, because only by proving that Kajanne did not murder his wife, Nina believes that it is possible to save her from Ordo's captivity. Nina gets to know her father.

Nina drives back to the monastery with her father. Dad tells Nina what happened when Aava died. After reaching the monastery, a surprising turn forces Nina to save Kajante personally.