During the Wei, Jin, and Northern and Southern Dynasties, two young masters from the powerful Wang and Xie families placed an astonishing wager aboard a pleasure boat, each vying for the affections of a famous courtesan. When the game ended, everyone aboard had been murdered, and a fortune in treasure had vanished without a trace. Zhang Chenghu, a constable in Jiankang County, and his friend Nie Wen Zhong investigate the case, uncovering a shocking conspiracy.