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.

"Based on the animated series and an original story by Maud Loisillier and Diane Morel." "An animated series based on the novel Le Petit Prince by Antoine de Saint Exupéry. Developed for television by Matthieu Delaporte, Alexandre de la Patellière, and Bertrand Gatignol. Directed by Pierre-Alain Chartier"--Copyright page.