Xu Changan, a seemingly gentle and easy-going ordinary office worker, is actually the most mysterious secret service ace agent in Beijing. In order to complete a secret mission, he was forced to have a flash marriage with Lu Hanzhou, the most powerful Jiu Ye in the capital. During the day, he is a harmless "little wife"; at night, he is a "night walker" wandering in the darkness. Lu Hanzhou appears to be cold and ruthless, but in fact he is a maniac who dotes on his wife. He spends his life every day to demonstrate "excellent speech and physical integrity". On the surface, Xu Changan is strategizing, but in fact, he is on the verge of collapse every day. He has to deal with Jiu Ye's sudden affection and secretly investigate the conspiracy of a transnational criminal group. When killers lurk, business rivals provoke, and family strife ensues, this "surface couple" becomes deeper and deeper in love and murder. Until one day, Master Jiu discovered the true identity of his "little wife", and the whole capital exploded...
