At four o'clock in the morning in the old alleys of Jiangcheng, Mo Yan worked three jobs to support her sister's medical expenses. When his sister's wrists showed strange lines and the abandoned puppet kept whispering, he realized that in addition to poverty, there was also the fear of being used as a pawn. Holding the broken sword that sucked in pain, he broke into the fog of the Guigui Pavilion. His seniors led the way and his comrades protected him. The clues pointed directly to the mysterious person. As the broken sword drinks blood and removes rust, the truth of the chess game is quietly emerging.