The body of a young lady, who had been fatally stabbed in a back alley of Yokohama’s shopping and entertainment district, is discovered. Four detectives from the Fourth Section of Minato-cho Police Precinct’s Criminal Affairs Division – Togashi Masayoshi, Iinuma Reiko, Shibata Yasuharu and Yamashita Manabu – quickly rush to the scene. Togashi finds something in the pocket of the dead body and nonchalantly hides it in his own suit. He presumes Reiko and the others will turn a blind eye even though they have noticed it.