Amongst the four Imperial Guards of China is Fat (Stephen Chow) a hapless gadget inventor operating under the cover of a gynaecologist - who must protect His Majesty from dark forces of the Jin Dynasty, despite not bearing any martial arts skills himself. Hong Kong box office winner and King of Comedy Stephen Chow (Kung Fu Hustle, Shaolin Soccer) stars and co-directs this hilarious parody of the espionage genre.