Amateur detective and singing sensation Dinah Galloway has enough on her plate without having to worry about being pursued by a vengeful stalker. The red-headed twelve-year-old is in the running to sing in commercials promoting beautiful British Columbia. To clinch the job, Dinah has to get fit at a wellness retreat on Salt Spring Island. Veggies? Exercise? Yech! Grudgingly, though, Dinah admits that her lifestyle could be a little healthier. Off to Salt Spring she goes, along with the two other finalists: one friendly, the other the last word in sulky. Her friends Talbot and Pantelli make their usual disruptive appearances, along with Dinah's ever-anxious mother and cool, elegant sister Madge. Hoping to shed not only pounds but her crazed pursuer, Dinah learns the true meaning of personal best--it truly is how you play the game, not whether you win or lose.