While Se-jeong and Min-young are nowhere to be found, the male detectives are invited to shoot an episode of the Curious Detective Show with IZ*ONE. They are tasked to solve the fictitious abduction of two of their members, but they soon realize that someone has kidnapped them for real. The detectives gradually discover that this case connects to their past investigations, as well as to forensic investigator Yoo Jong-hoon, Stephanie, and the Flower Killer.