Renowned racehorses, each leaving behind a legacy worth remembering, find themselves reborn as horse girls in a parallel world, each uniquely defined. In this new existence, they embark on fresh journeys, resuming their racing pursuits with the potential to rekindle their past glories.
With aspirations of becoming Japan's premier racehorse, a horse girl named Special Week makes the move to Tokyo, enrolling at Tracen Academy - a school dedicated to nurturing horse girls into accomplished racers. Here, Special Week witnesses the elegant racing style of Silence Suzuka, a sight that ignites her determination to follow in her footsteps. In short order, Special Week is recruited into Silence Suzuka's racing team, Spica. Thus commences her ascent towards the pinnacle, one stride at a time.