It's Halloween in Axle City, and Blaze, AJ, and all of their friends are excited to "Truck or Treat." But when Crusher tries to steal all of their candy, his plan goes awry, and he sends their treats far, far away from Axle City. Now Blaze and his friends must race to get to their candy before Crusher!

Blaze and his friends compete in the most epic race in history: the Race to the Top of the World! But when Crusher throws them off course, Blaze and his Monster Machine friends must persevere to make it to the finish line.