Seven years ago, Yan Chi, the commander-in-chief of the Northern Territory, was betrayed by his best friend and charged with treason. His family was destroyed and he only escaped with his life. Seven years later, he returned to the imperial capital as the mysterious businessman "Chen Yu". On the surface, the imperial businessman is offering auspiciousness and wealth, but in fact, he wants to play a game of revenge on this chessboard of power to overthrow the dynasty.