The Planet of Jade

The Little Prince and Fox arrive on the planet of the Lithiens, a people of stone, in the middle of a crisis: tangles of menacing thorns are attacking the stone cities. Micah, son of Jade, the head of the city, has failed to return from his quest to bring home a weapon against the attacks of the thorns, and the suspicious Jade holds the Little Prince and Fox captive. The Little Prince must find a way to save both the city and Micah, if he wants to win his freedom.