A boring summer vacation turns into a hunt for a gang of antiquities thieves when eleven-year-old Zack Harris and his buddies discover a coded message hidden in an old oak tree. Zack rallies Paprika, Stinky and twins Ricky and Randy to help solve the mystery. While examining the slip of paper at the Snack Shoppe, the boys notice Evan Zolotny, a new kid they've ignored because of his shabby appearance and not-so-shabby smarts. Zack decides to use Evan's...