Emperor KANGXI appoints his eldest son as the crown prince. The crown prince is a rude and unreasonable person. All the brothers dislike him. Among the people opposing the crown prince, the eighth prince YINSI has the most supporters. On KANGXI's birthday, the forth prince YINZHEN prepares water melon from Taiwan for him. The crown prince has prepared Buddha casserole for the emperor. However, after learning that KANGXI is not feeling well, he takes away YINZHEN's water melon and offers it to KANGXI. When YINGZHEN's bodyguard FUNG YING is patrolling, he discovers that an eunuch has died of poisoning after eating the Buddha casserole secretly. The crown prince believes that this was done by the eighth prince's supporters. He asks YINZHEN to capture the chef who ran away. At the slums of the capital, a shop is very famous for selling salted-fish buns.… ...