Dos jóvenes intentan robar una tienda de apuestas en Malton, pero se asustan cuando su arma no dispara. Durante su escape, uno de los hombres, Peter Corcoran, hiere a su compañero Nathaniel Cooper al probar el arma en el coche. Abandonan el coche en un arroyo y se separan en direcciones opuestas. Cooper hace autostop con el gitano, perdón, viajero, Johnny Lee, quien se dirige a la feria de caballos en Aidensfield. Lee lo esconde y se deshace del arma. La policía pronto captura a Corcoran, y Lee se vuelve contra Cooper cuando este último irrumpe en el Aidensfield Arms a pesar de haber prometido no cometer ningún delito. Otro viajero, Derek Egan, persuade a Greengrass para organizar una carrera para viajeros y sus carros, y permite al viejo bribón aceptar apuestas sobre el resultado a cambio.

Like many girls Pattie and Sheila Reilly likes horses. One day Pattie takes a ride on a stray pony. An unknown man surprises them and very unwisely fires a shot in the air. The sudden bang startles the horse and makes it bolt. Pattie is thrown off and her scared kid sister flags down PC Walker, who gets both of them to Dr. Trent's surgery. He also has his own, more romantic reason to see the attractive doctor. When Walker tries to find both the owner of the pony and the shooter he suddenly finds himself investigating a series of horse thefts. His life is not made any easier by Joyce Jowett, who complains to the police about a bad smell and noisy lorries from the house at the end of her road. Sergeant Miller has referred her to the town hall because it is not a police matter, but the battleaxe pesters the life out of Walker instead. Aunt Peggy gets mad at Oscar Blaketon for barring her and David from the Aidensfield Arms for playing poker.