A year after Gongsun Ce resigned and went into seclusion, Pang Tong arrived, and with him came a mysterious mission entrusted by the emperor.
Pang Ce and the two went south all the way, and met Feng Yanyou, Gongsun Ce's childhood playmate, and Yin Si, the son of the privy envoy of the current dynasty and the owner of Liufeng Tower. The four of them embarked on a journey to find things. As the truth became clear bit by bit, the emotional journey of the four of them also gradually became clear...