Pearls of the Deep

Ancient · Tit for Tat

Mermaid Bao Rourou searches for her missing father and becomes entangled in a murder investigation, meeting royal detective Gu Xinghe along the way. She reluctantly becomes his assistant while he secretly investigates her true nature in hopes of finding a cure. As they solve strange cases together, their connection deepens into love. Together they uncover a sweeping conspiracy linking every case to her father's disappearance, and with friends' help, they rescue him, but just after pledging their future together, a fresh crisis emerges.