Tom le cancre

5 years old children are lost in the woods after their teacher fainted from eating wild fruit. They meet 14-year-old runaway, Tom the Truant, who lives in a centennial oak tree. Tom strikes a deal with them: he will bring them back to their parents but in return they have to forget everything they have learned in school. A class led by a dunce re-open the world of fantasy and impertinence.