In Republican-era Tianjin, Gu Qinghe, an heir to the Water Cave Sect, joins forces with Ma Dabiao of a family of canal transporters and Shen Ji of a family of master mechanism-makers. Together, they venture into the century-old underwater tomb that He Shen sank in the depths of the Nine Rivers, uncovering the truth behind their parents' disappearance and breaking a blood curse passed down through generations. This is a Chinese folk-culture adventure story about their deadly struggle against sinister forces.
