‘Traffic Department’ is a story of seven policemen, connected by work, as well as friendship, partying, sports cars and common interests. At first sight, their small and closed world seems to function perfectly, but it all changes when one of them dies in mysterious circumstances. Sergeant Ryszard Król (Bartłomiej Topa) is charged with murder, and to clear his name he has to unveil the truth about corruption that reaches the highest levels of politics.