Izzie's always been curvy, but since Christmas, she has gained eight pounds, and nothing seems to fit any more! In her attempt to lose the extra weight, Izzie tries everything - one diet after another, a punishing exercise programme and every bit of conflicting advice anyone can give her.
Her constant worrying about her weight causes Izzie to lose her confidence, and she stops appreciating the things in her life that are special - her supportive friends, the fact that she has been selected for a TV teen panel and the cute boy at the studio who seems to appreciate her just the way she is. The girls all rally around to help her, but will Izzie see the light?