Seven years after being forced to resign as a New York city police officer, private detective Billy Taggart takes on his toughest case yet when he's hired to follow the mayor's wife. By the time the mayor reveals his true intentions, Taggart's already in too deep, with his freedom and possibly his life, on the line. Taggart will risk it all in a desperate bid to expose the truth and seek redemption in a city where second chances don't come cheap.

In New York City, a crime lord's right-hand man, who has his own dark agenda, is seduced and blackmailed by one of his boss's victims, a woman seeking retribution.

Just prior the the Civil War and after years in prison, Irish immigrant Amsterdam Vallon returns to lower Manhattan's lawless, corrupt Five Points section seeking revenge against the rival gang leader who killed his father. But before long, Amsterdam's personal vendetta becomes part of an erupting wave of full-blown gang warfare.