A gangster's quest for revenge is sidetracked by an encounter with his target's mother in this deeply-felt hybrid of a crime thriller and a family drama.

A miserly father and his clever yet immature son live emotionally impoverished lives together. That life is interrupted when a beautiful widow moves in as a tenant. A battle between father and son to win the widow’s heart begins. No concession, No scruples, No rules.

Yujeong is suicidal, yet she reluctantly goes to prison for volunteer work. There, she meets a prisoner who is waiting for death penalty. The two quickly fall in love despite their differences, yet they do not have much time.