Toppu Uno, a young boy fascinated by the heart-pumping and jaw-droppingly dangerous world of Motorcross, is determined to take on the world alongside his idol, Myne, and his rival, Takadai. After placing first in several name-making championships, Toppu is recognized as a top contender and receives an invitation to join a Moto3 team. Will he be able to keep up with his rivals during his first world championship race? Or will they give him a run for his money?!