On your marks...get set...GO! The Big Cheese Marathon is coming up, and Scratchy is training hard to be in with a chance of winning the trophy. But how is it that Rubba keeps beating her without putting in any effort? Rastamouse is suspicious, especially when he discovers that Rubba has two identical pairs of running shoes, two identical tracksuits, and one identical twin brother! It's a race against time to solve the mystery before Scratchy crosses the finish line - and to prove for once and for all that cheating doesn't pay.