Five children discover from Shen the Dragon that they are spirit warriors, on a quest to find twelve spirit pieces - if they fail, the evil Li will find them and then control the universe!

Martin, Trix and Vicky display different kinds of bravery and intelligence as they try to recover the spirit piece from the dreaded Cave of Ghosts. But will these qualities prove to be enough in a treacherous village whose every inhabitant has been destroyed by Hwang?