Former police officer Tianmin (Louis Koo) runs a small bar in the glamorous city of Hong Kong. That night, a mainland girl Xiaoyun (Tong Liya) was alone in the bar, drinking wine with a sad face. After closing, Xiaoyun was drunk and unconscious and couldn't drive. Tianmin had no choice but to send her to her godmother's house to rest. The next day, Xiaoyun went to pick up the car with Tianmin and his brother Shaocong (Shawn Yue) - a valuable Maserati. She found that the car key was missing, but she didn't dare to go home to get it. Tianmin felt that Xiaoyun was hiding a lot of secrets, and Shaocong seemed to be attracted to Xiaoyun and was willing to help. But just as they were picking up the car, a group of desperate people rushed out and took Xiaoyun away. The brothers fought fiercely with the gangsters, and Xiaoyun took the opportunity to escape. After the incident, Tianmin Bar was harassed by gangs, Shaocong's taxi was also maliciously damaged, and even hacked and killed by Taiwanese gangs. The two gradually realized that they had been involved in a struggle involving huge amounts of black gold and could only fight hard. This film is the comeback work of Hong Kong director Ringo Lam after a 7-year absence from the film industry.