In the early 1970s, when violent crime was becoming increasingly serious in the United States, the film blatantly proposed "the idea of exchanging violence with violence, allowing victims to provide their own relief and launch violent counterattack against criminals. It aroused quite heated discussions when it premiered. Action superstar Charles Bronson plays a gentle businessman. When his wife and daughter are raped by thugs, and his beloved wife dies as a result, his entire attitude towards life changes. He began to take the initiative to find possible violent criminals on the streets of New York at night and punish them. The police were confused by this mysterious urban hero: Is this really how the fight against crime is effective? Director Michael. Wenner successfully created a hero who turned violence to violence. Their actions after they couldn't bear it anymore generally won the approval of the audience, and Lao Cha's performance was also quite exciting. Jeff Goldbram made his first screen appearance, playing one of the thugs. The film adopts an extremely realistic approach to violence and stays away from the entertaining tendency of violence. The film released four sequels in 1982, 1985, 1987, and 1994, but there was nothing new and all received bad reviews.