After inheriting unexpected millions, reporter Jim Qwilleran and his crime-solving cats Koko and Yum Yum take up residence in a mansion and hire servants. When the maid disappears, Koko and Jim look for clues.

Qwill and his felines are hoping for a peaceful month at their lake-side cabin but when rumors begin to circulate that UFOs are responsible for the disappearance of a stray backpacker, discovered dead at the lake shore, Qwill finds it difficult to maintain a vacation mode.