After thirteen-year-old Agnes Fisher faints at school, her teacher, the young and idealistic Amy Slade, is shocked to discover photographs in the girl's desk. One is of Agnes in a lewd pose, captioned "What Mr. Newly Wed Really Wants." When Agnes does not show up at school the next day, her teacher takes the two photographs to the police. Then Detective Murdoch, furious at the sexual exploitation of such a young girl, sets out to find the photographer and put him behind bars.