Huey and Dimwit are hired by spies from Mosquack to go to the Federal Building and take pictures of top secret files X-1, Y-1 and Z-1; they come back with patent files instead.; J. Edgar Quacker gives Huey and Dimwit the secret files so that he can trail them to the spy headqarters, but Huey captures the spies without him.; When Papa builds a sawhorse, Huey rides it into Duckville and catches some bank robbers.; When Herman sees Katnip watching a mountain-climbing movie, he comes up with a scheme to get cheese that involves making Katnip think he's being trained as a mountain climber.; Papa buys Huey an accordion, but it pinches his stomach when he tries to play it.; Huey has to use his wits to figure out how to paint a flagpole on the side of a building.; Papa buys Huey a gas pump.