The Qin family made its fortune in the underworld, but after Qin Ditian took over, it suddenly went legitimate. The police still suspect that Qin Ditian is a gang boss, however, so they send rookie officer Xia Sheng to go undercover and get close to him. While undercover, Xia Sheng falls for Qin Ditian, and as the investigation progresses, gradually uncovers his secrets.
