Ferrans Godler (Johnny Hallyday) was a powerful killer 20 years ago. After retiring, he opened a restaurant in Paris and lived a quiet life. One day, his daughter Aileen (Sylvie Testud) and her family, who settled in Macau, were attacked by an unknown killer. The son-in-law and two grandchildren were all killed, and only Aileen escaped by chance. After hearing the news, Ferrans hurried from France to Macau. After seeing the tragic scene, he was determined to avenge his daughter's family at all costs. Due to his unfamiliarity with the place, Ferrans' investigation made no progress. By chance, he encountered an assassination in the hotel, and the three killers A Gui (Anthony Wong), A Zhu (Lin Jiadong) and Fei Le (Lin Xue) left a deep impression on him. After a brief trial and contact, Ferrans decided to hire the three A Gui as helpers. With the clues left by Ai Lian and the investigation at the crime scene, everyone gradually narrowed the encirclement, a war of revenge quietly unfolded, and the conspiracy behind the scenes slowly surfaced...