Martin, Trix and Vicky display different kinds of bravery and intelligence as they try to recover the spirit piece from the Cave of Ghosts.

Searching for the next spirit piece, the warriors head into Li's own realm of fire, where there is no water, so not even Shen can help them.

The warriors receive help from an unlikely source and finally do battle with Li. He leaves them so he can exact revenge upon a former ally.