The story begins when street racers called the RedSuns, a team from Mt. Akagi, come to challenge Mt. Akina's local SpeedStars team to a "friendly" race. After seeing how skilled the RedSuns are, the SpeedStars treat it as a race for pride, determined not to be humiliated on their home turf. However, the SpeedStars are left in a bind when their team leader and primary downhill driver Iketani has an accident during a practice run.