In the underground racing scene, emerging racer Xiao Le spirals into despair after an accident during a race with his brother, A Chieh. His life changes when he meets doctor Hui-Hui and becomes an ambulance driver, vowing to save people with speed. However, fate complicates things as San Pao and underground racing leader Brother Ben investigate, uncovering the unexpected truth about A Chieh.
Asheng, once a gang member of the Zhongshan District, was sent to jail for 12 years after saving his friend Shaou. He is released and returns to Linsen North Road, his old turf, finding it familiar yet perplexing after being away for so many years. Shaou is now a mob boss with his own turf. When the son of Seagull’s patron, Mr. Xiao, is murdered, the evidence points to up-and-coming mobster Monkey. Shauo tries to ambush Monkey and fails, getting shot by the drugged up gangster instead. Asheng, who initially refused to help Shaou, is now filled with rage and decides to avenge his friend.