長野県一刻館高校のボウリング部。楽しさを優先する部長の麻衣に対し、勝利を渇望する利奈は退部を切り出し、麻衣に勝負を挑む。勝負のさなか、麻衣が投じようとしたボールが突如光り出し、気が付くと部員5人は戦国時代にタイムスリップしていた。
"Turkey" is a bowling term for scoring three consecutive strikes.
Mai, a second-year student and captain of the Ikkokukan High School Bowling Club, is a genius who can't seem to win a match. Whenever she scores a Turkey, she mysteriously follows it up with an unyielding split—the Snake Eyes. One day, Rina, the club's only first-year member, confronts her
"You're doing it on purpose, aren't you?"
"You're running away from winning. But I want to win. If you have no intention of winning, I'll quit."
This is the story of Mai, Rina, Sayuri, Nozomi, and Nanase—five members of the Ikkokukan High School Bowling Club. They fight, they fall, but they rise again, chasing victory. This is the tale of a summer's final chapter.
