A derby race is the ideal stage for a thoroughbred to shine. For young Hime and her jockey father, the day of that derby was meant to be the best day of their lives. But during the race, her dad's thoroughbred was struck by another horse, and after being thrown off, he was trampled to death. Ten years later, Hime is a high school student who has had nothing to do with horse racing since that fateful day. However, chance encounters with two guys are about to significantly draw her back in...?