The Planet of the Overhearers: Book 7 (The Little Prince)

Continuing on their journey farther and farther away from home, the Little Prince and Fox land on a peculiar planet where flying machines spread terror through the towns. The Amicopes are a very talkative people, but those disquieting machines, controlled by the overseer Sahara, stop them from speaking out by taping their mouths shut! How did the young man become such a tyrant? And is a revolution really the best solution?