In the fifth year of Tianxuan Dayue, the censor, the Prime Minister, was demoted to Tangzhou for being disrespectful. Passing through Tongbai Mountain, he was chased by assassins sent by his political enemy Privy Councilor Cai Ting. The brave and foolish young man Xu Huai unexpectedly awakened a strange story in his mind. In the memory of later generations, the assassin was scared away by a strange combination of circumstances, and was involved in this treacherous assassination case in the last years of the Dai Viet Dynasty...