Always at the center of comical misadventures, the Harper family and their extended members live together under one roof led by their matriarch, Mama Thelma Harper. In season four, Mama tries to get her high school equivalency diploma, Vint is mistakenly accused of being Raytown's serial burglar, finances force Vint and Naomi to live a separate-but-together lifestyle, and the Harpers’ garage sale goes awry. Plus, Mama becomes jealous over Iola’s new friend, and Naomi loses her memory.