In 1987 Korea, under an oppressive military regime, a college student gets killed during a police interrogation involving torture. Government of officials are quick to cover up the death and order the body to be cremated. A prosecutor who is supposed to sign the cremation release, raises questions about a 21-year-old kid dying of a heart attack, and he begins looking into the case for truth. Despite a systematic attempt to silence everyone involved in the case, the truth gets out, causing an eruption of public outrage.

A 5 member gang, led by Seok-Tae (Kim Yun-Seok), kidnaps a baby boy named Hwa-Yi and raises the baby like their own son. The baby boy is now 17 years old (Yeo Jin-Goo) and has turned into a lethal killer. Taking part in his father’s gang, Hwa-Yi learns about his own past. Hwa-Yi pulls out his gun to find out who he really is.