After his stepson Trent sees a murder being committed, FBI agent Malcolm Turner steps in to protect him, and the two go on an undercover mission to an art school for girls in Georgia, where they pretend to be an old woman and her great-niece.
Big Mommas latest part; FBI agent Malcolm Turner and his 17-year-old son, Trent, go undercover at an all-girls performing arts school in Georgia after Trent witnesses a murder. Posing as Big Momma and Charmaine, they must find the murderer before he finds them.