Harold Parkette hires "Pastoral Greenery and Outdoor Services Inc." to cut his lawn. Yet a mystery surrounding the service is that no one has ever seen the person who owns and operates the enterprise. Parkette decides to find out the identity of the mysterious lawnmower man. In the earliest hours of morning he discovers the strange and horrible truth. The serviceman is not a service "man" at all but a strange inter-dimensional being that takes the form of a symbiotic organism, a machine that mows the lawn by itself while a strange naked man follows behind the mower, eating the grass. The serviceman has the appearance of a satyr who works for the Greek god Pan. The event is terrifying and beyond the comprehension and intellect of Parkette. In a panic he tries to call the police, but it is too late, and the mower and its human slave violently turn on him.