It's the first day of summer vacation, and life is great--until the Riot Brothers find out their cousin is coming to visit How can you complete secret missions and make exciting things happening when you have to drag around a guest? Luckily, it turns out Cousin Amelia is the kind of cousin they like--the fun kind She's just as great at coming up with cool games and clever sayings as Orville and Wilbur, and she even travels with her...