Zai Zaijia has gone missing, and the only clue to his disappearance is a set of Dou Shou Qi (Animal Chess) that the Supermen managed to find. However, during a struggle with the villains, the chess set is shattered. The eight Dou Shou Qi pieces transform into eight Chess Beasts, scattering across various locations in Brave City. To rescue Zai Zaijia, the Supermen must retrieve the scattered Chess Beasts and unravel the secrets hidden within them. Meanwhile, the villains continuously interfere in their efforts to seize the Chess Beasts for themselves. A fierce battle between good and evil unfolds as both sides vie for control of the Chess Beasts...