The dams may have given the city its water supply, but it also flooded the farms, turning good fields into worthless swamp. Of course, the city hoofers never did care much for the country, leaving the now out-of-work horses, donkeys and cattle to fend for themselves. While most just made the best of it, one donkey's ambition led him to stealing goods from the city, a major crime that made him a lot of enemies. But also the loyalty of Colette, his mare girlfriend, who hid him in the swamp after his bold escape from jail. Now with the swamp sheriff smelling an opportunity at some fat reward money, it's a fight to hide the longear as long as she can.
Runson did what Colette asked and poisoned the coffee he pours for the sheriff every morning. But when morning rises, the honest mule has a change of heart. But before he can warn the stubborn old bull, he learns that the sheriff has his own problems with the unlucky longear.