Even in New York, which is known as the city that never sleeps, neon lights all over the city can't illuminate every corner of the night. Radio host Erica (Judy Foster) and her beloved fiance (Neville Andrews) stray into the dirtiest dark world one night and are besieged by a gang of thugs. Erica was seriously injured and her fiance was killed. After recovering from the injury, Erica found a detective friend and her loyal listener, Messer (Terrence Howard), and asked him to do justice, but the man, who was devastated by countless crimes, could not devote all his energy to Erica's case, and the angry Erica decided to solve the problem on his own. She bought a gun from the black market and became the Night Avenger, punishing sinners who escaped the law. All this, attracted the attention of Messer, he represents the justice of the law obviously can not agree with Erica's approach, the contradiction between the two will eventually break out.