 After a undercover operation where Bobby Saint, son of corrupt businessman Howard Saint, is killed. FBI agent Frank Castle retires. Howard Saint holding Castle responsible for the death of his son butchers Franks family during a family reunion and leaves Frank for dead. Burnt out and taunted by memories of his murdered family, Frank sets out to avenge his family, and he becomes a judge, jury and executioner known as "The Punisher", as Castle sets out to punish Howard Saint and his associates in a one man war, as Castle is not willing to give up until those responsible are dead and until he has his revenge.