The diversely talented Samurai Kids set off to rescue their friend -- and find secrets in their midst -- as the action-packed martial-arts series continues. The Samurai Kids are ready to travel back from China to the Cockroach Ryu, nestled in Japan's Tateyama Mountains. But then the unthinkable happens: Kyoko, one of the Cockroaches, is kidnapped. Sensei knows it is the mark of his old enemy Lu Zeng, an evil minister of the Forbidden...