When the evangelist came to town Slippery Slim, being in a particularly sentimental mood, swore off and left his bad past behind him. The parson was in for painting the town white. That is why he followed up Rattlesnake Joe, the whiskey smuggler, and brought him over to conversion. But the parson made a slip that spoiled it all. When a spring apparently gushes forth forbidden liquid, what can a poor parson do?