ข้อมูลอนิเมะBig Windup!

Mihashi a freshman in high-school, and has just transferred to Nishiura High, a school not known for its baseball. But after he gets forced into playing by its new female coach, he befriends the the catcher Abe, who becomes his main supporter in the future.

The baseball team at Nishiura High heads out to a training camp. As everyone is preparing for their first practice match against Mihashi's old school, Abe realizes that the catcher's role is not just on the field but is also to encourage and to protected the pitcher and his well-being.

The practice game between Nishiura High and Mihoshi, Mihashi's old school, is about to start. However before the game starts Mihashi loses his confidence and runs behind the club building, Hatake, the catcher from Mihoshi, followed him and begins to harassing him to the point of threatening to break his arm for the lost games in middle-school. It becomes apparent that Mihashi's lack of confidence stems from the constant bullying and scorn of his former teammates. Mihashi is rescued by Abe who convinces him to play and thus the game begins.

(Nishiura-0 vs. Mihoshi-0: bottom of the 1st – bottom of the 2nd inning) Mihashi is pitching nicely, outing all of Mihoshi’s batters so far. At the top of the 2nd inning, Tajima easily hits Kanou’s forkball. Kanai tries to compete with Tajima and do the same, but strikes out instead. Momoe-san then stresses the importance of the team to work together, because Tajima needs the help of his teammates in order to score runs since he is too small to hit home runs on his own. During the bottom of the 2nd, Kanou explains to Oda the secret behind Mihashi’s fastball, saying that it is “faster than a slow fastball”, which is why it is hard to hit.

(Nishiura-2[Oki & Tajima] vs. Mihoshi-0: top of the 3rd – top of the 4th inning) With nice team work, Nishiura is able to score two consecutive runs easily. Meanwhile, tension is rising between Kanou and the rest of his team. They end up having an argument, but eventually cooled down and resolved to win the game against Nishiura to prove once and for all that Kanou is the better pitcher. Witnessing from the sidelines, Mihashi seems to be longing to join back with his old team, but Abe decides to do his best to get Mihashi to acknowledge him and Nishiura as the team in which Mihashi belongs to.

(Nishiura-2 vs. Mihoshi-3[Yoshi, Oda & Hatake]: bottom of the 4th – bottom of the 7th inning) Going into the bottom of the 7th inning, Kanou finally goes into detail about how great Mihashi’s control really is, and Mihoshi’s substitute coach comes up with a plan. Abe tried to aim for a perfect game (not letting any opposing players to get onto base), but because Mizutani missed the ball, the perfect game was lost. Abe then was determined to have a no hit and no run game, but since Oda followed the coach’s plan, Oda was able to assist his teammate to run home. To make matters worse, Hatake was able to rally by hitting a home run, placing Mihoshi in the lead. However, despite the devastation, Mihashi still has the will to keep on pitching.

(Nishiura-4[Sakaeguchi & Abe] vs. Mihoshi-3: top of the 8th – bottom of the 9th inning) Through good teamwork, Nishiura was able to rally and gain back the lead. After winning the game, Mihashi’s old teammates finally acknowledge their mistakes and ask for his forgiveness and to come back. Mihashi declines, but he says that he liked finally getting the chance to play a proper game of baseball with everyone. After returning back to their training camp, Mihashi finally is able to fall asleep.

(Urasou-2 vs. Musashino-1: top of the 1st – bottom of the 2nd inning) On the way to practice, Mihashi meets Sakaeguchi and learns about how in the Senior League, Abe was teamed up with an “amazing pitcher”. During practice, Shiga-sensei teaches all of the players how to meditate, saying that it will help them build a relaxing reflex that they can use when they are in a pinch. Thus the team starts to perform a 5 minute daily routine of meditating before practice. After a bit of practice, Momoe-san takes the team to go see a spring prefecture (Kantou) tournament game, Urawa Composite (Urawa Sougou, aka Urasou) vs. Musashino First. There it turns out that the “amazing pitcher”, Haruna, pitches for Musashino.

(Urasou-3 vs. Musashino-4: top of the 3rd – bottom of the 9th inning) Abe’s past relationship with Haruna is revealed, showing the circumstances that led Abe to consider Haruna to be the worst pitcher instead of one of the best. However, instead of easing his worries after Abe’s explanation, Mihashi is still extremely intimidated by Haruna because he sees how much of an impact Haruna has been in Abe’s life.