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! Jen gets a taste of what it is like to be a leader when she and Trix are kidnapped by the playful monkey people - and Jen is made monkey king! But when Hwang arrives at the monkey palace with a secret weapon, Jen learns that being a king is not just fun and games.