When the tattooed torso of a dismembered man is discovered stranded on the shore on Amundon Island, just outside Gothenburg, Irene Huss is determined to find the killer. Upon investigation, her team discovered that a similar cold case has taken place in Copenhagen. Joined by her colleague Jonny, they decide to collaborate with their danish counterparts and follow their lead into Copenhagen’s underworld. At the same time, Irene is looking into the strange disappearance of her friend’s daughter who was last known to have travelled to Copenhagen.