Kansas City, 1933. Frank Nash is a petty criminal being escorted back into town by train. FBI agent Vetterli, waiting for the convoy at Union Station, is expecting a routine assignment. What happens at Union Station that day is a massacre, with no one knowing who really pulled the trigger first. Newspaper reporter, Charles Thompson, is a witness to the events at Union Station and begins a personal investigation that may cost him his life, and that of his family. In the tradition of Torso and Road to Perdition, Union Station is the true story that started J. Edgar Hoover's "war on crime" and helped shape the FBI into the agency it is today.