On the day after Christmas, head of Department Q Detective Carl Morck finds himself handcuffed in a police car headed for Copenhagen's Vestre prison. After 15 years, a violent case from his past has caught up with him. Charges of drug trafficking and murder threaten to destroy his life and career. But he is being framed. Someone has a million dollar bounty on his head to make sure he doesn't talk, putting him in grave danger among the prison's incarcerated criminals and corrupt officers. The question that remains is, why? Carl's colleagues at the Copenhagen Police Department instantly turn their backs on him, leaving the ever-loyal Department Q team as his only hope. In search of answers, Rose, Assad, and Gordon must disobey direct orders from way up the chain to try to unravel the case. They must work faster than ever before if they are to clear his name - and save his life.