Ye Wenkai, a medical student returned from France, and his girlfriend Su Yiman visit her family, only to be caught in a series of murders. After Su's uncle is killed, Ye becomes a forensic consultant for acting sheriff Wu Dahai. They solve cases including a poisoned prostitute, a corpse with nine orifices sewn shut, an unbreakable alibi, a resurrected bun shop owner, and a river ghost conspiracy. Meanwhile, Su's family faces more deaths and the patriarch's disappearance, leading to a stormy night reckoning after a decade of secrets.