Shuang Xia plot
The patriot Bao Tingtian and his men try to save their comrades who are about to be executed. They are of the defeated group, who attempted to rescue their kidnapped prince from the heavily guarded castle of the enemy, Man Tian Keui. Bao manages to save one person, who turns out to have a map as a tattoo that describes a secret route to the back of the castle. This one, however, has a cunning bridge that can only be crossed with skill. The suitable man for this is Wang Sun, but he soon turns over to the enemy. His fighting brother, Little Bat, is tasked with righting this betrayal and assisting the patriots in attacking the castle.