Private investigator Gokuu Fuurinji is well-versed in Tokyo's underworld. Upon noticing that every detective who has investigated arms dealer Genji Hakuryu has died under suspicious circumstances, Gokuu knows he is the only one for the job. After discovering the existence of modified humans with strange powers, Gokuu nearly falls victim to an assassin's hypnotic suggestions. However, when a mysterious man implants a supercomputer into Gokuu's left eye capable of easily hacking any computer in the world, the detective is able to stand against the man who destroyed the lives of many of his colleagues.