Famous magician Shi Yijian (Chow Yun-fat), who once served as the general security consultant of American casinos, finally returned to Macau to retire and invited friends from all walks of life to celebrate his birthday. Among them, his good friend Benz (Hui Shaoxiong), his son Shaileng (Nicholas Tse) and his nephew Niu Bisheng (Chapman To) came to Macau from Hong Kong to celebrate. The next day, the police from mainland China, Hong Kong and Macau unexpectedly approached Shi Yijian, hoping that he could come out of hiding to help deal with Mr. Gao (Gao Hu) of the DOA organization group, but Jian declined the offer on the grounds of retirement. On the other hand, Leng and Niu Bisheng came to Jian together, hoping that Jian would accept them as his apprentices. Although Jian admired Xiao Leng, he had no choice but to refuse because he had retired. However, for Benz's sake, he treated him for a night. Who knew that he would meet a killer (Zhang Jin) that night, and the killers chased Xiao Leng and Jian's beloved daughter A Cai (Tong Fei) without asking the reason. Although she was rescued by Chinese police officer Luo Xin (Jing Tian), Ah Cai was eventually killed and lost her memory. After a thorough investigation, they found out that the mastermind behind the incident was Mr. Gao. How could this happen without any reason? Jian and Xiao Leng joined forces, together with the female police officer Luo Xin, and the other two devised a brilliant plan to deal with Mr. Gao. They fought with wits and strength, vowing to get to the bottom of the matter and bring him to justice...