This world is a complex place and to manage it efficiently, there are laws and regulations and administration that take care of the chaos, but not always justice is served. Many helpless people live with whatever lives they have been offered unless someone intervenes in public interest.
HN Maaki, an orphan of Japanese descent who grew up in America and changed his identity, have been living a decent life. He was a teacher during the day but he operated a secret underground network of justice system that is intolerant towards any form of tyranny or injustice. Law shouldn't be taken into own hands but HN decided to do that and always stealthily get away with crime His erratic pattern gave him a name - Psycho. There has always been curiosity whether HN was Psycho to which HN always denied.
In his personal life, HN was romantically attracted towards Roma, who never believed HN could be Psycho. All those times he spent with Roma, it was certain the rumours were not true, but a series of events occur around the world which unfurls the nasty truth. What was the real identity of Psycho? Why would Roma shoot her lover HN? Read more to find the answers to the mystery.