The first feature-length animated film made in France, the work's music was composed by René Cloërec.

One night Johnny reads a tentful of scouts a fairy tale book about the evil giant.

A bird carries Johnny from the castle to the forest, where he sees the friendly insects of Insect-ville, saves them from a lizard, is captured by spiders, and is rescued by bees.

The queen bee favors Johnny, which makes the drones jealous.

The film ends with them returning to the scout camp, with the giant shrunk to insect size in a birdcage as a souvenir.