A girl mocked for being overweight decides to compete in her favourite TV show. Jemima Small is funny and smart. She knows a lot of things. Like the fact that she's made of 206 bones, over 600 muscles and trillions of cells. What she doesn't know is how that can be true and yet she can still sometimes feel like nothing. Or how being made to join the school's "special" healthy lifestyle group - aka Fat Club - could feel any less special. But Jemima also knows also knows that the biggest stars in the universe are the brightest. Maybe it's her time to shine.