God of Gamblers
Meanwhile, Little Knife (Andy Lau), an avid but mediocre gambler who idolises the God of Gamblers, sets a trap for an Indian neighbour as a practical joke. After a fight on a train between Ko Chun, Dragon, and henchmen sent by one of Ko Chun's rivals, Ko happens to accidentally stumble into Knife's trap. Ko falls down a hill, hitting his head, and subsequently suffers from amnesia and regresses to a childlike state.