Nestled in the sleepy countryside lies Kasamatsu Tracen Academy. Jo Kitahara, a trainer, can't help but bemoan the state of regional races compared to the star-studded national scene. But one day, as he passively watches the newest batch of racers practice, he spots an ashen-haired Umamusume. After seeing her stunning racing form, Jo Kitahara is convinced—at long last, he's found a star.

Oguri Cap and Belno Light are officially scouted by Jo Kitahara. Seeing as a racer needs to belong to a team in order to race, Oguri Cap accepts and begins training for her debut race. When the day arrives, she finds the student hailed as their generation's ace—Fujimasa March—waiting for her...

Up until now, Oguri Cap has simply run because she can, but after her heated race with Fujimasa March, her heart wells with a new, bitter emotion. As Oguri Cap and her team ensure she's properly prepared for her next race, another opponent shows her face: Norn Ace. Annoyed by Oguri Cap, Norn Ace's friends propose a certain "strategy" to her...