Aqiu (played by Anthony Wong) was once a well-trained policeman. Now, he has retired and works as a taxi driver. He lives a life of dependence with his son Dongdong. Although it is hard, it is full of warmth and happiness. One day, Aqiu's ex-wife suddenly appeared in front of him. At this time, she has become the wife of the underworld gangster Zhao Zhongtian (played by Long Fang). She has only one purpose for this trip, which is to take Dongdong away from Aqiu. Having lost his only son, Aqiu fell into despair in grief and anger. He learned that Zhao Zhongtian was about to take Dongdong to the United States, and they might never see each other again. In desperation, Aqiu took the students in a primary school as hostages, hoping to take Dongdong back. Zhuo Liren (played by Vincent Zhao) is a skilled security guard, and Qi Hong (played by Gigi Lai) is an experienced reporter. With their help, can Aqiu realize his wish?