In Europe in WW 2, a tank expert has been captured and sent to a POW camp for torture. Lt. Dennis and Rex get themselves captured deliberately. Once in the camp, Rex helps Dennis and the Colonel sneak out of barracks, pose as a traveling clowns, and even put on a show before they snatch a truck and race to freedom. Rex receives a Silver Star for his actions!; A Cocker Spaniel, Beauty, pretty but a "show-off", stays with the Dennises for a week. She and Rex play, but dog-nappers cosh Rex and carry her off for ransom. Rex follows, vaults fences, trips locks, bites guns, and pins the crooks until police arrive. He even lets courageous Beauty eat out of his special dish.; Lou Palmer and Leapin' Lena, a kangaroo, were stage stars until vaudeville faded. They opt for the Old Actor's Home, but "pets" are banned, so they wash dishes. Robbers rob the restaurant. Lena boxes them silly, then pursues their getaway car and jumps atop so it crashes. A TV exec offers them a TV show, and Lou and Lena are hits again! They even sent a fat check to the Old Actor's Home so pets can be attend.