When Andrea, a damage regulator from Benthos Oil, is sent out to Rig 45 two days before Christmas to investigate a fatal accident, the rig is hit by a hurricane and all communications lost. Soon, the crew realize that the accident is in fact a murder, and they now know that they are in real danger.
After the assassination of prime minister Olof Palme in 1986, Stig Engström managed to elude justice right up to his death through a combination of audacity, luck, and a perplexed police force.
When a body is found on the bridge between Denmark and Sweden, right on the border, Danish inspector Martin Rohde and Swedish Saga Norén have to share jurisdiction and work together to find the killer.
When the police officer Veronika Gren (Alexandra Rapaport), struggling with a tablet addiction, sees a dead boy (Sam Herrgard), she questions her sanity, but she realizes that she is facing victims of unsolved crimes and that her past can help to catch a killer on the loose.
Murder investigator Evert Bäckström is convinced that crimes have been committed when a women's cranium is found on an island in the archipelago. But his investigation is countered by the police chief and when the woman's identity is clarified, the entire investigation is turned upside down.