Even in New York, which is known as the city that never sleeps, the neon lights all over the city cannot illuminate every corner of the night. Radio host Erica (played by Jodie Foster) and her loving fiancé (played by Neve Andrews) strayed into the dirtiest dark world one night and were besieged by a group of thugs. Erica was seriously injured and her fiancé was brutally killed. After recovering from her injuries, Erica found her detective friend and loyal listener Messer (played by Terrence Howard) and asked him to uphold justice. However, this man who was overwhelmed by countless crimes could not devote all his energy to Erica's case. Angry Erica decided to solve the problem herself. She bought a gun from the black market and became the "Night Avenger" to punish the criminals who escaped the law. All this attracted the attention of Messer. The justice of the law he represented obviously could not agree with Erica's approach, and the conflict between the two would eventually break out...