Everyone in Denmark knew that Iraqi refugee Yousef Ahmed murdered the right-wing politician Sanne Melgaard. So, when part-time blues musician, frustrated home renovator, and full-time private detective Gabriel Praest agrees to investigate the matter because his ex asked him to, he knew it was a no-win case. But in this series debut, Praest clashes with Russian gangsters; the Danish prime minister asks him for a favor; and as he traces the case back to World War II, he realizes that something may be rotten in the state of Denmark.