At 3:30 a.m., Xu Zhixia has her door knocked on by Jiang Yan. From that moment on, she takes on the job of being his girlfriend for a monthly salary of 200,000 yuan. She is unbelievably professional: memorizing his preferences, keeping other women away, and publicly playing the part of his girlfriend. Even when she runs into him with his ex-girlfriend, all she cares about is protecting her client's privacy. But as this fake romance, with every detail assigned a price, goes on, real feelings begin to develop. Jiang Yan no longer wants to be the client; he just wants to become her official boyfriend. Pleased with his performance, Xu Zhixia decides to promote him from boyfriend to husband.