This series introduces readers to six major action sports, covering exciting moments, top competitors, and the history of each sport. Each title features informative sidebars, detailed infographics, vivid photos, and a glossary.

Annie's roller derby team, the Liberty Belles, are finally on a winning streak. They plan a special Halloween bout with their arch rivals, the High Rollers. But Annie sprains her ankle. Will it heal in time for the bout? To make matters worse, Tyler seems to be ignoring her and flirting with Kelsey, her school's most popular cheerleader. At least Jesse is proving to be a good friend. He always seems to know exactly how to cheer her up.