Forbidden City Cop

In ancient China, it was a long established tradition for the Emperor to be protected by a special squad of undercover guardsmen. Guardsmen Gong, Xi and Cai excel in the skill of martial arts, while Fa is untrained in martial art, working as a gynaecologist as his cover. The other guardsmen and the Emperor look down on him. China's neighbouring country, Jin, had always wanted to invade China. By propagandising the dissection of an extraterrestrial being, its King plans to attract all medical doctors to Jin and have them killed. Then China's soldiers would be left with no doctors to care for the wounded, and they would be no match for Jin's invading army. However, the alleged forthcoming dissection is so fascinating that even the Emperor of China goes to Jin to see it, and is promptly taken prisoner. Luckily, Fa rescues him with the help of Fa's invention. Fa is handsomely rewarded when the Emperor gets home. Fa is actually an honest fellow who just loves to invent things. He is also devoted to his wife. However, a bodyguard of Jin's King, disguised as the famous prostitute Qin Cao, tries to seduce Fa to break up his family and make the Emperor distrust him. Fortunately, Fa manages to expose the evil plan and earn back the trust of the Emperor and his wife. Finally, Fa kills the bodyguard from Jin with the skill he learnt from the extraterrestrial being.