Zatch wants to see the Praying Mantis Joe live show at Mochinoki Department Store, but has to be accompanied by an adult to get in. Kiyo won't go with him, so Zatch takes Ponygon. They meet up with Suzy and the teacher's Wife, who are also going to department store. At the Department Store, Zatch witnesses Praying Mantis Joe taking off his costume and is even more upset when the man inside looks rather weak. Everyone else is disappointed with their own items, as well. The kids ask Praying Mantis Joe to do something about all these problems. But the weakling portraying Joe turns them down, so Zatch and his friends confront the Store Manager. But the Store Manager threatens to have his bodyguard throw them out. Just then, Praying Mantis Joe appears, having remembered his strength of heart. Ultimately, the bodyguard is taken down and Joe wins. They are all able to exchange their faulty goods, and Zatch learns the real meaning of 'the heart of justice.' (Source: IMDb)

Aired on: 2/7/2004