When Homer gets an experimental hair treatment, he grows a shaggy new mane. Marge finds the new Homer sexy and Mr. Burns mistakes his most incompetent employee for a hungry up-and-comer and promotes him. As part of his promotion, Homer gets an overly attentive assistant named Karl who ensures that his every step is correct and his every move successful. When Homer's hair begins to fall out again, his success goes down the drain as well.