Mamaw (Lawrence) keeps an eye out when Robby (Billy Ray Cyrus) heads off to his high school reunion. Things get worse when Mamaw steps in for the school cafeteria lady and runs the place with an iron fist, soon alienating the entire student body. Anxious to get rid of Mamaw but not wanting to hurt her feelings, Miley (Cyrus) and Jackson (Earles) hatch a plan that includes a visit from a fake health inspector which turns out to be Jackson.