Detroit, 1941. With the nation on the brink of war, four people unite against the treachery that threaten's America's "arsenal of democracy."

Eva Szabó, a young immigrant, goes undercover at the Ford Rouge Assembly plant to expose the company's campaign of anti-union violence. Her boss, private investigator Elizabeth Waters, probes Detroit's pro-Nazi, Christian nationalist fifth column groups. Police detective Clarence Brown, part of a segregated squad of Black officers, exposes a deadly conspiracy to ignite racial hatred. And Detective Sergeant Denny Rankin seeks the links between them all to atone for his part in Detroit's widespread corruption scandals.

EVA SZABÓ, a young immigrant, goes undercover at the Ford Rouge Assembly plant to expose the company's campaign of anti-union violence. Her boss, private investigator Elizabeth Waters, infiltrates Detroit's pro-Nazi, Christian nationalist fifth column groups. Police Detective Clarence Brown, part of a segregated squad of Black officers, uncovers a deadly conspiracy to ignite racial violence. And Detective Sergeant Denny Rankin seeks the links between them all to atone for his part in Detroit's widespread corruption scandals.

EVA SZABÓ, a young immigrant, goes undercover at the Ford Rouge Assembly plant to expose the company's campaign of anti-union violence. Her boss, private investigator Elizabeth Waters, infiltrates Detroit's pro-Nazi, Christian nationalist fifth column groups. Police Detective Clarence Brown, part of a segregated squad of Black officers, uncovers a deadly conspiracy to ignite racial violence. And Detective Sergeant Denny Rankin seeks the links between them all to atone for his part in Detroit's widespread corruption scandals.

EVA SZABÓ, a young immigrant, goes undercover at the Ford Rouge Assembly plant to expose the company's campaign of anti-union violence. Her boss, private investigator Elizabeth Waters, infiltrates Detroit's pro-Nazi, Christian nationalist fifth column groups. Police Detective Clarence Brown, part of a segregated squad of Black officers, uncovers a deadly conspiracy to ignite racial violence. And Detective Sergeant Denny Rankin seeks the links between them all to atone for his part in Detroit's widespread corruption scandals.