Karen is shopping at a convenience store during which a robbery occurs. The owner is killed and her niece is kidnapped. When her niece is thrown from the fleeing car, she is left seriously injured in hospital for days, and ends up a paraplegic. Karen thinks she recognises one of the robbers but he is released because of a false alibi. Tortured by the memories of the murder of her brother, a crime that was not solved, Karen goes on a trail of revenge against the perpetrators.