The young man in black robe fell into the cliff, "Revenge... Begins." It was like a devil whispering. Was the fall off the cliff a mistake or was it intentional? Why does he seek revenge? What kind of revenge plan will be launched? One day ten years later, the arrival of Gu Yuanxiao triggered a vision of light and darkness in the world. The Great Elder Xuan Qi was very excited about it. The mysterious man in black robe with a mask said that this was the biggest variable in his plan. Is the mysterious man the boy who fell off the cliff that year? Why is Gu Yuanxiao the biggest variable in his plan? Xuan Qi talked about the origin of the world - from [Chaos], starting from [Judgement], and the intersection of light and darkness is [Judgement]. Will he become a judge? Invisibly, Gu Yuanxiao and the mysterious man were sitting face to face, playing a chess game called "good and evil". Who will be the final winner? Who will be the "good" in the chess game, and who will be the "evil" in the chess game? The story is about to unfold, and a decades-long chess game begins. Gu Yuanxiao will illuminate the darkness with light and destroy justice with darkness!