Enchanted by the joy of motorcycle racing, young Toppu Uno has racked up win after win--but after a desperate battle with Yoshiya Takadai, Toppu comes to know the frustration that comes with defeat. Using that frustration to motivate him, he undergoes special practice with Myne, and it all comes to a head amid the great equalizer of road racing: the rain. Toppu's greatest challenge is still in front of him!