Li Shan (played by Lee Min Ho) and A Yo (played by Zhong Hanliang) used to be Interpol, but were dismissed together due to failure in the mission and became private bodyguards. In a seemingly ordinary explosion case, the two men and a reward team composed of Ling Xin (played by Tang Yan), Swan (played by Wu Qianyu) and Baobao (played by Fan Shaohuang)...