Archie comes back from his summer away to find that he is the only kid in Grade 6 who has not grown bigger. Even his best friends Alfie and Shamini have gotten taller — and Shamini has developed in other ways, too. Archie knows that if only he can be more like the heroes of his favourite comic books, TV shows and video games, he'll be able to keep the older boys from teasing Shamini about her newly developed body — and maybe she'll keep her promise to go to the first school dance with him. From practicing the ninja crawl to bulking up with exercise and a high-protein diet, how can Archie fail?