When fat civil rights activist Gabby Medeiros's supersized boyfriend decides to lose weight, he unwittingly forms a fissure in their relationship. Can their relationship survive? As a fat acceptance warrior, Gabby necessarily rejects dieting as unhealthy and counterproductive. A telephone bill collector by day, she spends two evenings a week doing what she really loves: pontificating from her position at the local radio station about the evils of the diet industry and a society that shames those who don't fill out the proper dimensions. Though people sometimes snicker at the cause she holds so dear, fat acceptance is very serious business for Gabby. When her live-in beau Denny Emory tells her that he is going to lose weight in order to control his diabetes, Gabby advises against it. Slowly, his diet changes the very dynamic of their relationship, to the point that Gabby questions whether it will survive.