Mace Blazer is the world’s hottest TURBOnaut. Compared to the other ‘nauts, he drives faster, dares harder, and pulls the craziest stunts. Since he won the Grand Prix and revealed that he’s only thirteen, the world is screaming Mace’s name -- and he loves it. Now Mace won’t let anything hold him back from becoming the greatest racer of all time—not his friends, his family, or his feats. But when a new contender shows up on the racetrack able to make moves no one has ever dared try before, Mace is forced to realize that there’s more to racing than just going fast. Especially after he discovers a sinister threat that could destroy not just TURBO, but the world. In the thrilling sequel to TRAILBLAZER, Mace will have to decide if he’s willing to risk everything to save the sport, and the people, that he loves. Every morph matters in this heart-pounding, exhilarating adventure series by acclaimed author Austin Aslan.