In this modern telling of the classic tale, aspiring singer Katie Gibbs falls for the new boy at her performing arts high school. But Katie's wicked stepmother and stepsister are scheming to crush her dream before she can sing her way into his heart.

FBI agent Malcolm Turner and his 17-year-old son, Trent, go undercover at an all-girls performing arts school after Trent witnesses a murder. Posing as Big Momma and Charmaine, they must find the murderer before he finds them.