An abandoned tanker ship crashes into the Oresund bridge, on the border between Sweden and Denmark. Onboard are five Swedish and Danish youths, chained below deck, unconscious. Investigating the incident is Scandinavia's oddest couple: Swedish detective Saga Noren, hampered by primitive social skills, and Martin Rohde from Denmark, still reeling from the death of his son. Theirs is a friendship from having been through hell together on the job.