In the early 1920s, the Greenwood District in Tulsa, Oklahoma, is the wealthiest Black community in the United States. But Tulsa is still a segregated city. "Black Wall Street" and white Tulsa are very much divided. Twelve-year-old Lena knows this, but she feels safe and sheltered from the racism in her successful, flourishing neighborhood. That all changes when Dick Rowland, a young Black man from Greenwood, is accused of assaulting a white woman. Racial tensions boil over. Mobs of white citizens attack Greenwood, terrorizing Black residents and businesses, and forcing many--including Lena and her family--to flee. Now Lena must help her family survive one of the worst incidents of racial violence in American history.