Review:
Under appreciated as an actor in the west, Chow Yun Fat shows his incredible versatility as a performer in this Hong Kong comedy/drama.

Chow stars as Ko Chun a gifted gambler with an almost supernatural gift for gaming, hence his exalted title. Ko Chun is suave and sophisticated, master of his gaming, monetarily successful and confident in his abilities. This makes him enemies among not only opponents, but his allies.

Having narrowly escaped an assassination attempt, Ko Chun unwittingly walks into a trap set by Knife, a young gambler wannabe who hankers after a big score. Knife meant to teach someone else a lesson by sabotaging a private trail near his home, instead, Ko Chun is the victim. Finding the head injured gambler, Knife and his family take him in and nurse him back to health, not realizing who has literally tumbled into their lives.

Ko Chun awakens from his trauma with no memory and regressed to a childlike demeanor. He's an appealing man-child with an insatiable hunger for a particular brand of chocolate (one carry-over from his former life), and as Knife and Co. find out, a talent for gambling. Knife and his crew make good use of their new friend's abilities--becoming upwardly mobile thanks to "Chocolate"--the nickname they bestow upon him, knowing no other.