On April Fools' Day, Gilbert is unhappy that everyone is tricking him and he is unable to get them back, but then he thinks of a great way to fool his best friend. Includes tricks hidden in the illustrations for the reader to find.

"Gilbert's tooth is wiggly and loose all through spelling and lunch. Then he scores a run in kickball and BAM! his tooth is knocked right out of his mouth! Gilbert is so excited that the tooth fairy will be visiting. But Lewis is jealous of Gilbert's lost tooth and comes up with a sneaky plan. Will the tooth fairy fall for Lewis's trick? The reader finds out just how resourceful the Tooth Fairy can be" --