Marina has spent most of her adult life on a diet. And although big girls aren't supposed to cry, in Marina's experience, they don't have much fun either. But when scientist David Sandhurst invites her to enrol in a test for a miracle weight-loss drug, Marina thinks her prayers have been answered.

Soon enough, Marina discovers that she's losing those excess pounds and gaining confidence. She's waving goodbye to her hips and hello to an exciting social life - and a whole new set of problems . . .