It's 1894 on New York's Lower East Side. Irish cop Tom McGlory and Italian immigrant Vita Caputo fall in love despite their different upbringings. Vita goes from sweatshop laborer to respected bank clerk to reformer, helping elect a mayor to beat the Tammany machine. While Tom works undercover to help Ted Roosevelt purge police corruption, Vita's father arranges a marriage between her and a man she despises. When Tom's cousin is murdered, Vita's father and brother languish in jail, charged with the crime. Can Vita and Tom's love survive poverty, hatred, and corruption?