A story about two brothers who become enemies in a fight against terrorism. Qin Xiaoyang (Yang Xuwen) and Tang Shi (Wei Chen) grew up together like brothers. Because of an incident, the two ended taking very different paths. Qin Xiaoyang gets the opportunity to join an elite security intelligence unit. Through the help of Zhu Yutong he successfully infiltrates a terrorist organization called hell gate and must face off against Tang Shi who has become a vigilante for hire.