Tao Jun, a world-famous pharmacy doctor, was murdered at home. Qin Jialuo was ordered to investigate. However, during the investigation, Qin Jialuo discovered that his beloved girl Jian Qing was also being hunted down. Could this be related to Jian Qing's unknown mermaid identity? Or is a serial murder targeting mermaids quietly underway?
Intention: There is hell in the heart and there are devils everywhere. There is a prison in the heart, and there is no freedom anywhere.