Book 3 of Tony Hawk's 900 Revolution series
When Tony Hawk completed the first-ever 900 revolution, a mysterious force shattered his board; today, a group of teenagers search the globe to find its pieces and reclaim its power. Amy Kestrel, one of these teens, is shy in public, but out on the mountains with her snowboard she is ferocious and daring. When a group of masked men threaten her mountain, it will take all the courage she has--and the all confidence she lacks--to stop them.