Episode 1

Shogo Sano (Kuranosuke Sasaki) of the Metropolitan Police Department's First Investigation Division is a detective who will stop at nothing to solve a case. One day, the body of a neurosurgeon is discovered in an underground parking lot; the victim has died under bizarre circumstances, with four knives driven into his throat. Sano launches an investigation alongside his partner, Anna Hazumi (Yuri Tsunematsu), and Toru Kanzaki (Taishi Nakagawa), a researcher seconded from the National Research Institute of Police Science. However, the situation takes a dramatic turn when a second victim is found. As they trace the victim's background and clues from the crime scene, the existence of a mysterious research facility emerges as a key lead in the investigation.