In this twilight world, gangster and law enforcer attract and repel each other in waves of violence. Here Tatsuhito, a dirty cop, pursues the gay, sadistic Chinese warlord, Wang, through the night world of Shinjuku and over to Taiwan, in search of the financial resources that underpin his empire.

"Shinjuku Triad Society" is a shocking investigation into a dehumanized world, where Tatsuhito fights to obtain a glimpse of salvation.