Runway model Sandra Bush dreamed of becoming the first African-American supermodel, only to struggle with addiction and despair. But she later achieved celebrity as Mama Bush, the model for some of the best-known and widely admired paintings by her daughter, acclaimed artist Mickalene Thomas. In her film directing debut, Thomas paints a poignant portrait of her mother and artistic muse, presenting a tender look back at a lifetime’s worth of hopes, regrets and redemption.