The story revolves around Su Jian Ming and Li Hui Lin jointly investigating an undercurrent criminal case involving a huge interest group. In order to investigate the case, Su Jian Ming ignores the persuasion of his powerful father Zheng Gang, and rushes to the "Hongmen Banquet", hosted by rich businessman Li Zhi Tian. More and more clues gradually surface. The undercurrent surging behind these clues makes people faintly feel that a big game of chess is being planned.