The peasant Adémaï, returning home, gets lost in the forest and knocks down a border post. In his haste to replant it, he installs it upside down.

Johnny and his friends embark on a journey to rid their land of an evil giant. While inside the giant's castle, the children are trapped by the giant and put through a magical shrinking machine. Johnny narrowly escapes the castle, but he is now the size of a small insect. Johnny will find that the world of insects is no picnic. The bees are feuding with the hornets, and Johnny is right in the middle of it. Johnny must now gain the trust of the insects to help him rescue his friends from the giant. Can he do it in time?