Iron-armed pitcher, Haruka Kiyomine, and the shrewd catcher, Kei Kaname, AKA the 'Skilled General,' were considered to be an unrivaled, monstrous battery duo in the middle-school baseball world. They were both scouted by various powerhouse high schools across the nation, but somehow, they both ended up at Tokyo Municipal Kotesashi High School, which wasn't known for baseball at all. On top of that, other star players who had lost to that duo in the past and completely strayed from baseball coincidentally also enrolled at that school, and… Their meeting sets everything into motion once again. Their high school baseball story begins now!