中学球界で名を馳せるも野球から遠ざかっていた天才たちが都立の野球無名高校で偶然集結。完全無欠の剛腕投手・清峰葉流火（きよみねはるか）。その相方（バッテリー）、切れ者捕手の“智将”要圭（記憶喪失により現在、素人！）。そして、かつて2人に敗れ散った者たち…。
巡り合い、再び動き出す彼らの高校野球ストーリーがいま始まる!!

Geniuses who made a name for themselves in middle school baseball but have been away from baseball accidentally come together at an obscure metropolitan high school. Haruka Kiyomine is a pitcher with an unbeatable arm. His partner, the shrewd catcher, Kei Kaname, is now an amateur due to amnesia! And those who were defeated and scattered by the two in the past…
The story of their high school baseball game is about to begin again!