Synopsis:
Famous in China and abroad, once served as the United States casino security chief consultant of the magician Shi Yijian (Chow Yun-Fat), finally returned to Macau to retire,
More invited friends from all walks of life to celebrate his birthday banquet. Among them, his good friend Benz (Lawrence Hui), his son Leng (Nicholas Tse) and his nephew Niu Bisheng (Chapman To) come from Hong Kong to celebrate the birthday in Macau. On the following day, the police of the Mainland, Hong Kong and Macau all approach Shek Yat Kin, hoping that he will come back to help deal with Mr. Gao (Gao Hu), the leader of the DOA group, but Kin politely refuses, citing his retirement as the reason.
On the other hand, Leng and Niu Bisheng come to the door together, hoping that Kin will take them as disciples. Although Kin admires Leng, he has to refuse because he has already retired, but for the sake of Benz, he will entertain him for one night. But for the sake of Benz, he entertains him for the night. Unbeknownst to them, they meet a killer (Zhang Jin) that night, who directly pursues Leng and Kin's beloved daughter, Ah Cai (Tong Fei), without asking for a reason. Although the Chinese public security officer, Luo Xin (Jing Tian), saves her, Ah Cai is killed and suffers from memory loss. The two of them, Jian and Xiao Leng, together with the female public security officer Luo Xin, have been working together to deal with Mr. Gao, and they have been fighting to find out the truth and bring him to justice.