In high school, Rintaro Tsujido was on fire as a road racer, but when a terrible accident happens, and his father is left with heavy medical bills, he's forced to switch to bettable bike races. Gradually, he began to love the thrill and aims to be the best cyclist to ever race. He won 3 consecutive A-class races, which allows him to move up to S-Class. However, S-class seems to be a bigger hurdle to overcome than anything he's gone through before. To reach the top, he hones his skills. A new chapter of Rinta's career starts!