Dog Duty tells the tale (or "tail?") of Fritz, a German Shepherd who was once the top dog of the Grand City Police Department - literally. There's police dogs and then there's Fritz. A true dog's dog. A dog neither afraid nor jaded by the streets he patrols and the criminals he chases. But all that changes in a moment. On another routine late-night foot pursuit, Fritz is confronted by Clay, an ex-military Rottweiler custom built with one-syllable efficiency. Bite. Maim. Kill. Fritz' injuries force him into a retirement of backyard boredom, surrounded by suburbanite hounds of all shapes and sizes. That won't do for a dog like Fritz. There's a reason why you don't see retired K-9 dogs laying around. Fritz narrates his quest for revenge and redemption in this adventure that takes him through the seedy canine underworld of cat-races, underground clubs, back alleys, and dog parks. Along the way, he encounters criminals of all breeds, derelict mutts, beauty queens, and a hotshot young K-9 hungry for publicity. At the end of that road is where Fritz will find Clay. That's the only way Fritz will ever get his life back.