Nô Otoko plot
A small town in Japan is ravaged by a series of random explosions. Ichiro Suzuki, better known as "Brain Man" is identified as an accomplice for these crimes. This mysterious man has a very good memory, is very intelligent and has the perfect body but seems to have no human feelings. Neurologist Mariko Washiya, who has her own personal trauma, believes in the good in every person and therefore tries to help criminals. She becomes interested in Ichiro and tries to find out the truth. Meanwhile, Detective Chaya is also after "Brain Man".