Carmen is the most beautiful and desirable girl Lucy has ever known, and when Carmen is savagely murdered, Lucy's teenage life crumbles. She is devastated by the loss of her first love, and when it appears the killers might never be found, she vows to solve the murder herself. Together with her best friend Seth, who is not only a master computer hacker but also the son of LA's new Chief of Homicide, they gain access to the gruesome autopsy reports. They learn the true extent of the horror inflicted on Carmen, and Lucy gets closer to understanding the secret behind Carmen's little black dress. After another beautiful girl is murdered, they uncover the brutality lurking within the corridors of their privileged Los Angeles high school. They put their lives on the line to come face to face with the murderer himself.