 
                                                                98 minutos
Chi Mo Sai (Yuen Wah) meets Wong (Roger Kwok) in Auntie Fei's (Yuen Qiu) cafe and learns that Wong has photographic memory. He decides to exploit this skill by teaching Wong how to play Mahjong, but Fei, Wong's boss, strongly objects to it. Despite Fei's objections, Wong learns Mahjong from compulsive gambler Chi Mo Sai. He impresses triad boss Tin Kau Ko (Wong Jing). Wong falls in love with Tin's mistress (Theresa Fu) and is beaten by Tin's men. Wong then becomes crazy. Luckily, Fei cured him using Mahjong. Fei wanted Wong to beat Tin in the "King of Mahjong" competition and be the King of Mahjong. The film ends with a climactic "King of Mahjong" Competition. It is the only film made in 2005 to boast of having a sequel made in 2005.
 
                                                        Roger Kwok Chun-On
Ah Wong
 
                                                        Yuen Wah
Robert Chi Mo Sai
 
                                                        Yuen Qiu
Auntie Fei
 
                                                        Jade Leung Tsang
Phoenix Girl
 
                                                        Wong Jing
Tin Kau Ko
 
                                                        Theresa Fu Wing
Cheryl
 
                                                        Iris Wong Yat-Tung
Overbite Jan
 
                                                        Tenky Tin Kai-Man
Big-Mouth Kau
 
                                                        Lam Tze-Chung
Balloon Lin
 
                                                        Lee Kin-Yan
Masked Leon
 
                                                        Teresa Lee Fung
Auntie May
 
                                                        Ding Yue
Uncle Ray
 
                                                        Yang Neng
Butcher
 
                                                        Eddie Li Yu-Yeung
Young Chi Mo Sai
 
                                                        Jerry Lamb Hiu-Fung
M. C. of Mahjong Contest 2005
 
                                                        Gary Mak Wing-Lun