Despite his horoscope's dire predictions of doom, Qwill plans to spend a peaceful, trouble-free summer in his 75-year-old cabin in Mooseville. But peaceful and trouble-free it is not to be. Qwill's cabin soon turns into something out of a Three Stooges skit, and the handyman he hires to do some necessary renovations disappears without a word. Curious about the high mortality rate among Mooseville's carpenter class, Qwill starts to suspect foul play. Koko only adds to his misgivings by enigmatically thumping his tail in Qwill's face every five minutes -- in perfect synchronization, one might say -- with Qwill's own twitching mustache. By summer's end the cabin is beyond repair -- and Qwill is under suspicion of murder.