Taikoubou and Sibuxiang arrive in Chouka, the capital city of the Yin Empire. There, Taikoubou gets so hungry that he ends up eating grass. As a result, he gets stomach pains and flies off with Sibu to find some medicine. The two then find themselves at a village, where they are fixing the roof of the home of a doctor, who gave Taikoubou medicine for his stomach. The village is then attacked by an army of the Yin. Taikoubou takes it upon himself to fight the leader of the army, Chinto.