A year ago, a revenge murder case occurred in the small northern town of Chencang, and the perpetrator Qin Hong fled; One year later, when the police "discovered" Qin Hong in the south, her body had already been thrown into the sea by her boyfriend Ma Weicheng, and there were no bones left. This is a case where both personal and physical evidence are present, and the perpetrator has even confessed to the crime. However, the disappearance of the body has made the chief detective Liu Wang uneasy. Without a doubt, "Is Qin Hong really dead?"