Lu and Clancy can't wait to head to the carnival and go on their favorite ride, the Drop of Doom. The only problem is that Lu's annoying cousin, Jake, is tagging along. While Jake takes part in a magic show, Clancy uncovers more than hocus-pocus when he overhears two crooks planning a robbery at the Drop of Doom. Now the crime-fighting canines must stop the heist -- but first they have to get Jake off their case! In this engaging activity storybook, kids help the dog detectives foil the crooks' plot while discovering the secret to doing simple magic tricks.