In the case of the disappearance of a serial narcotics investigator, investigators disappeared one after another, and Nagisa, an elite investigator, arrived at the understaffed Narcotics Investigation Division, and Nagisa, who burned with a sense of justice and revenge, recklessly embarked on a solo investigation ... Gather information about the Black Lion Society Moriyama Gumi and get into the AJITO building alone, but there is a trap there! Nagisa who was caught and detained and administered an illegal thing that they were chasing ... What is the fate of elite investigator Mitsuki Nagisa!!