Now officially finished with fourth grade, T.J. and his best friends are ready for an amazing summer. Unfortunately for him, they're all going away to various summer camps leaving him all by himself. But his loneliness is cut short when he discovers that some weird happenings are going on at the school. When Principal Prickly suddenly gets dematerialized, T.J. rounds up the gang to uncover the truth about the weirdness at the school. What they discover is a sinister plot to destroy summer vacation by an insidious former principal. Now it's up to T.J., the gang, and a few unlikely allies such as Ms. Finster, to save the world from becoming schooled year-round.—Blazer346