Airman Andor is a policeman assigned as a "traffic cop in space". His spacecraft is designated as Patrol Craft Double-Z. Infatuated with detective fiction of the 20th century, he dreams of one day leaving the force. He goes on a disturbance report in Number 10, Vector 2 living quarters. Inside, he finds an aged man and a young blonde woman named Kyt. The oldster tells Andor that Kyt is his maid, and he caught her looking for his treasure map.