After three adventures in which the dragon warrior Po fought the most formidable masters of evil thanks to unparalleled courage and martial arts skills, destiny will once again knock on his door to… invite him to finally rest. More specifically, to be named spiritual leader of the Valley of Peace. This poses some obvious problems. First, Po is adept at spiritual leadership as well as dieting, and second, he must quickly find and train a new dragon warrior before he can enjoy the benefits of his prestigious promotion. Worse still, there is talk of the recent appearance of a witch as evil-intentioned as she is powerful, Chameleone, a tiny lizard who can transform into any creature, regardless of size. Now Chameleone gazes with her eager and piercing little eyes at Po’s staff of wisdom, with the help of which she hopes to be able to reinvoke from the realm of spirits all the evil masters that our dragon warrior has defeated. Po will have to find help. He will find some (or not?) with Zhen, a corsac vixen, a thief as cunning as she is quick-witted, who has the gift of irritating Po but whose skills will prove precious. In order to successfully protect the Valley of Peace from the reptilian clutches of Chameleone, this strange duo will have to find common ground. This will be an opportunity for Po to discover that heroes are not always where we expect them.