A new crime syndicate, the 'Light Flow Alliance,' has been implicated in a human trafficking case that has long been designated a major incident. However, frustrated by the slow progress of the investigation, a senior official at the investigative bureau has issued an order to the organized crime division to dismantle the 'Light Flow Alliance.' Ayane Shimazaki, a rookie investigator, was excited but also nervous about participating in her first large-scale investigation project. She had always dreamed of being a hero of justice. However, an unimaginably cruel tragedy was waiting for her.
