Ah You (Wang Xi) has been determined to become an excellent firefighter since he was a child. When he grew up, he and his friends Ah Xing (Qian Jiale) and Ah Ba (Zheng Jingji) applied for the fire school together. During this period, they met Ah Yao (Guan Yonghe), Ah Bo (Louis Koo) and Zi Ji (Alan Tang). After graduation, they became friends and were assigned to different fire departments. Except for Ah Bo, they were all assigned to the team of Ah Feng (Li Zixiong), and Ah You's outstanding performance was appreciated by Ah Feng. Ah You's mother was suddenly critically ill. What Ah You didn't expect was that he and Feng were half-brothers. Moreover, the two had great differences at work, and their relationship cooled rapidly. Ah Bo, who was assigned to Cheung Chau, fell in love with his colleague Ah Cui (Liang Zheng), but Ah Cui had already been the girlfriend of his brother (Zheng Zicheng)... A group of firefighting elites, in addition to taking care of the safety of life and property of the masses, also had to deal with their own grievances.