Seventeen years ago, criminal inspector Evert Grens was called to the scene of a brutal crime. A family was killed, the only survivor was a five-year-old girl. She was placed in witness protection and the case was closed, but years later, Inspector Grens is still haunted by memories of the murders and the child who was spared. When he learns that the apartment where the crime took place has been broken into, he begins to fear that someone is intent on silencing the last witness. Meanwhile, someone in the city's underworld is executing arms dealers and threatening the family of former police informant Pete Hoffman. He must uncover a hidden threat while keeping his own secrets. Soon his search for answers becomes intertwined with Evert's, and the two men find themselves in the midst of a criminal conspiracy more complex and dangerous than they could have imagined.