Night Owl Detective

In high school, Su Cheng from the animation club got terminally ill. All the members of the animation club boarded the Wanyuhui cruise ship to prepare a farewell party for her. When Su Cheng's cabin door was knocked open, there was nothing around her neck, and she was holding her head in both hands. Now, everyone goes their separate ways. Lin Yanchen, one of the survivors, became a criminal police officer and joined the detective organization - Night Cat Club at the suggestion of captain Guan Yizhou. He will travel to various cities as a night owl to find former club members and re-investigate the case.