Maurice, a streetwise alley cat, orchestrates a sophisticated Pied Piper scam that encounters an unexpected, lethal threat in the town of Bad Blinitz. Maurice leads a group of sentient rats and a human boy, Keith, through a series of cons designed to extract money from gullible townsfolk. Their objective is to maintain their ruse while navigating the physical dangers of a town plagued by traps and a hidden, malevolent force. The narrative employs a third-person perspective to explore the moral complexities of intelligence and survival within the established Discworld setting.

Readers and critics frequently highlight the balance between the narrative's comedic tone and its underlying darker themes. Discussion often centers on the effectiveness of Pratchett's world-building, specifically how he adapts familiar folklore into the unique logic of the Discworld. Many observers note the depth of character development for the rats, which elevates the story beyond a simple animal adventure. The pacing is often described as tight and engaging, ensuring that the humor does not overshadow the tension of the central conflict. Fans of the author appreciate the consistent wit and the philosophical questions posed regarding the nature of intelligence and morality.