The battle for endurance among mankind and Parasites proceeds persistently around the globe. Unfurling in the shadow of the legends of Shinichi and Migi, another fight for presence is uncovered. Fukami, a veteran criminologist, explores a merciless mass homicide, and is agitated by the self-restraint of the source: secondary school understudy Tatsuki. The wellspring of that distress exists in Tatsuki's family... The story on the opposite side of the imperishable magnum opus "Parasyte" starts here!