In the small town of Castle Rock word gets around quickly. That's why Scott Carey only confides in his friend Doctor Bob Ellis about his strange condition. Every day he's losing weight - but without looking any different. Meanwhile a new couple, Deirdre and Missy, owners of a 'fine dining experience' in town, have moved in next door. Scott is not happy that their dogs keep fouling on his lawn. But as the town prepares for its annual Thanksgiving 12K run, Scott starts to understand the prejudices his neighbours face. Soon, they forge a friendship which may just help him through his mysterious affliction...