The "Hikari-Ryuu Alliance" is a new crime organization that has long been designated as a major case and is believed to be involved in human trafficking overseas. However, the investigation is progressing slowly, and the senior officers of the Investigation Bureau are frustrated, so they give the order to the Organized Crime Division to destroy the "Hikari-Ryuu Alliance". Rookie investigator Ayanami Shimazaki is nervous but Kokoro to participate in her first large-scale investigation project. She has always admired the heroes of justice. However, an incredibly cruel tragedy awaits her.