Mrs. P. and her students return to school from their holiday break only to find more pranksters on the loose in her classroom. Mrs. P. is pranked with a hologram of Snow White and the Seven Dwarfs, the Ghost of Avery Middle School and with the mother of them all--her keys mysteriously disappear for weeks. Ella, Lennox, Stella and Austin team up to investigate and uncover the identity of the secret prankster who is constantly disrupting Mrs. P.'s class.