In 1945, Charlie Trammell steps off a cross-country train into the vibrant tapestry of Los Angeles. Lured by his cousin Marguerite's invitation to the esteemed West Adams Heights, Charlie is immediately captivated by the Black opulence of L.A.'s newly rechristened "Sugar Hill."

Settling in at a local actress's energetic boarding house, Charlie discovers a different way of life--one brimming with opportunity--from a promising career at a Black-owned insurance firm, the absence of Jim Crow, to the potential of an unforgettable romance. But nothing dazzles quite like James "Reaper" Mann.

Reaper's extravagant parties, attended by luminaries like Lena Horne and Hattie McDaniel, draw Charlie in, bringing the milieu of wealth and excess within his reach. But as Charlie's unusual bond with Reaper deepens, so does the tension in the neighborhood as white neighbors, frustrated by their own dwindling fortunes, ignite a landmark court case that threatens the community's well-being with promises of retribution.

Told from the unique perspective of a young man who has just returned from a grueling, segregated war, The Great Mann weaves a compelling narrative of wealth and class, illuminating the complexities of Black identity and education in post-war America.