Yun Shitong's father Yun Ding suddenly goes missing during her wedding. Leng Fei tells Duan Fei that his father's death is likely to have been closely connected to Yun Ding. At the same time, Hong Ding company is on the brink of collapse and Han Zhiming works with his father to go against Yun Shitong. Shortly after, Yun Ding dies from an accident and Duan Fei goes missing. Various evidences point to Duan Fei as the murderer. Can Shi Tong solve the mystery?