A French-produced animated series. Many centuries ago, in imperial China, a demon named Heihu is terrorizing the province of Henan. His followers, thugs calling themselves the "Black Foxes", plunder and raze villages, making life miserable. The population turns to the three knights of Shaolin for help, who succeed in sealing Heihu away in a magical prison. The Black Foxes eventually break up, and the land is at peace once more.