Pepin is very small, so small that his parents are afraid of what could happen to him if he leaves the house. But how to know what one is worth without facing any obstacle? So his parents agree to let him out and he goes with his ladybug friend... The world is vast and dangerous for such a small person but with intelligence and common sense, Pepin will manage to get what he wants ! Even the great wild bull will be tamed by Pepin !