When their car breaks down, honeymooning couple Ray and Meg Loomis accept the courtesy of a brash middle-aged man named Mr. Moon. Unfortunately, while trying to fix the car, Mr. Moon ruins his new suit -- whereupon he goes berserk, threatening dire consequences to both Ray and Meg. Before long, it is obvious that the Loomises are unable to escape the wrathful Mr. Moon -- but as things turn out, this temperamental gentleman is not the villain of the piece.