With a walk-off home run, Etsuzen High School advance to the finals. However, they find out that entering the Koshien would cost a lot of money. Niwa (Kotarou Koizumi) and the local influential people he gathered are trying to find a solution.
Complete unaware of the fact, the team hardens their resolve towards the finals at Nagumo’s (Ryohei Suzuki) home. The 3rd years are all thinking about the upcoming game that may be the final one of their high school career, as well as their future. Nemuro (Katsumi Hyodo) had been scouted by a university, but is unable to tell that to his older sister, Yuzuki (Mizuki Yamashita)… Furthermore, Inuzuka (Fumiyo Kohinata) has made a decision.
At last, the day of the final. With even the Seiyo High School’s cheering squad coming to support the Etsuzen High School, Nagumo and his students start their fateful match to commit Japan’s biggest upset.