During the prosperous period of the Tang Dynasty, undercurrents surged in Chang'an City. The new champion accidentally gets involved in the fight for the right to inherit the throne, but discovers that behind the so-called power game, there is actually a secret palace case from thirty years ago. Just when he thought he had uncovered the truth, he was shocked to realize that he had become the most critical piece on the chessboard - and the person holding the chessboard was actually the person he trusted the most.
