Two brothers try to break free of the gang life, only to be attacked in retaliation for their decision. The younger brother is seriously burned and dying in a hospital, which drives his older brother to take vicious revenge.

Sung-soo has everything a man could want: a beautiful wife and children, a comfortable home and luxury car, and plenty of money in the bank. When he learns that his estranged brother, Sung-chul, has gone missing, haunting memories of their troubled past urge him to visit his brother’s apartment in search of answers.