In 1960s Harlem, gangster Bumpy Johnson fights to hold his power in a city shaped by crime, politics, and shifting alliances. Season 4 finds Bumpy continuing a violent battle for control of Harlem against New York’s Mafia families, while the arrival of gangster Frank Lucas adds new pressure. In the wake of Malcolm X’s assassination, he also faces turmoil at home as his daughter Elise becomes involved with the Black Panthers.