Daigo Shigeno, whose father is a professional baseball player who was also active in the major leagues, is in the second year of junior high school. He goes to a private school with Mutsuko Sakura, a childhood friend and teammate from the boys' baseball era. Daigo and Mutsuko belong to the baseball club, but there are only 6 members, and 4 including Mutsuko are girls. In April, when the new first grader is greeted, captain Daigo is eager to recruit new students to make up for the shortage of members. Around that time, at the entrance ceremony, first-year sports-recommended students were all in line ...

With the arrival of five new first-year students, including Nishina, from the strong baseball team Nanyo Lions to the Fuurin team, with only six members, Daigo and the veteran students, went excitedly to the field for morning training. However, Nishina and the 1st grade students, refuse to train until coach Kunitomo, appointed to be the coach of the Fuurinchu baseball team, is appointed. Mr. Yamaguchi, an advisor, came to Daigo and the others and said: "I want to talk" ...! ?

With the cancellation of the new director's appointment, the four first-year boys have advanced to the senior league, and the new strength of the Fubayashi Naka Baseball Club is to add Anita & Senri from the prestigious Yokohama Little to Nishina, who is left alone as a boy. After all, there were only three people. In this way, it turns out that the official game is coming up two weeks after the nine people are all together. Anita, the catcher, has a sigh of breath because it is a real battle, and Daigo tells Daigo that the pitchers are not alone with Nishina and Mutsuko.

On the morning of the first game of the Fubayashi Naka Baseball Club, Daigo's father, Goro, was with his teammate, Toshiya Sato, who taught Daigo the basics of baseball when he was in elementary school. We were talking on the phone. Toshiya cares about the first match in Fubayashi while communicating the latest situation with each other. To Toshiya, Goro remembered Daigo's half-year struggle to become the captain in the first grade in an unexpected way, and strongly stated, "Daigo will do it."

The opponent of the first match of the new Fubayashi Junior High School baseball club is Itsuki Junior High School. Ace in Itsuki, Yokouchi has only 9 members in Fubayashi who came out to the ground, and it is surprising that there are 6 girls. Yokouchi, who can't hide his dissatisfaction with "Why should I be the starting lineup for girls?", Confronts top batter Chisato. On the other hand, the starting pitcher Mutsuko in Fubayashi is pitching for the first official game, so he tightens his feelings and heads for the mound.

In the first round of the district qualifying, Fubayashi got 3 points in advance for the first time, but the starting lineup in Itsuki, Yokouchi's starting pitcher, the changing ball and slider that had been sealed, gradually suppressed the batting line. I went. Mutsuko, the starting pitcher in Fubayashi, also politely throws a changing ball and manages to dodge the Itsuki batting line. Daigo, who is prepared for a close battle with a low score, is worried about the fraying of the Fubayashi defense team, but just before that, the first third grader, Tamba, misses the ground ball.

The opponent for the next round in Fubayashi was decided to be Urabe, who was a teammate of Daigo and his teammates when they were in elementary school, and Seiwa, who has Andy. Daigo and Anita, who recorded 11 stolen bases in the first match and witnessed the mobility of Kiyowa who won the cold, are keenly aware of the need for stolen base measures. Therefore, the baseball club members who had just finished the first game were gathered again at the school, and the pitcher Mutsuko rushed to the special training to suppress the opponent runner.

In order to block Kiyowachu, who boasts the mobility of threats such as stolen bases and bunts, Daigo and his colleagues carefully prepare for the check on runners, centered on pitcher Mutsuko, and face the second round. Daigo predicts that "Kiyowachu will not be reckless from the beginning," but Kiyowachu's top batter Moriguchi suddenly hits the base. The Fubayashi battery is shaken at once. Anita, a catcher who puts a happa on Mutsuko who is upset, loses her normal spirit.

In the second round of the district qualifying, catcher Anita, who was too cautious about the mobility during the Qing dynasty, was pointed out by Wright's Nishina that some mistakes were made and got stuck in words. Even in the prestigious Yokohama Little, which belonged to elementary school, Anita had a bitter memory over the position of a catcher. He was depressed even during the match, thinking that he might have been disqualified as a catcher, and offered Daigo to replace the catcher.

Fubayashi caught up with Anita's one shot, but in the final 6th inning, he took a long hit during Kiyowa and allowed him to win. In addition, the catcher Anita injured her wrist with the close play. Daigo on the left wears a mask. With a runner on the 1st and 3rd bases, it is No. 4 Andy in Kiyowa who will reach the turn at bat with a pinch of further runs. What is the strategy chosen by Daigo and Mutsuko's batteries against their former teammates who are proud of their bangs! ??

The second round of the district qualifying is finally to the final round! In the top of the 7th inning, he allowed an additional point during Kiyowa and further widened his lead, but Nishina, who pitched urgently, took a series of strikeouts, and Fubayashi managed to get through the pinch. And in the bottom of the 7th inning, the last attack in Fubayashi was a high-ranking line starting from No. 3 Sawa. However, No. 4 Anita just injured her right wrist ... Urabe and Andy's Kiyowa Battery severely attacked Anita's weakness, the internal angle.

With Daigo's dramatic goodbye hit, Fubayashi Naka defeated the difficult enemy Kiyowachu, who has old friends Urabe & Andy, and advanced to the semi-finals of the district tournament. Tao Tsuchiya and Yayoi left the stadium in a hurry, although they were members of Fubayashi who scouted the games of other schools while dragging the tiredness of the fierce battle. Anita, who has been a junior of Tao Tsuchiya and Yayoi since the Yokohama Little era, quickly heads for the treatment of her injuries, even though she is worried about the plain behavior of the two seniors she longed for.

Fubayashi, who advanced to the semi-finals of the district tournament without the rain from the previous day, is facing a match against Yanagawa Junior High School. Anita, who was injured, dropped to No. 6, and Fubayashi Nine faced with the order changed to No. 4 Daigo and No. 5 Nishina, but Mutsuko will continue to be appointed as the starting pitcher. Mutsuko, who had expected Chisato to be the starting lineup in the series of battles, was confused, but Daigo, who realized the growth from the first race, strongly encouraged Mutsuko.

Fubayashi, who won the semi-final with Sekitori's daring full-base home run, begins to prepare in a hurry for the final match from the afternoon, which will be a series of battles. On the other hand, Daigo leaves the reconnaissance of the match between Eihogakuin and Oobi Junior High School to Mutsuko and others in the semi-final, and goes out with Nishina's pitching practice starting in the final. However, the match between Hidekuni and Oo suddenly unfolded, and Daigo, who was suddenly called to the stand, was shocked by the face of Oo.

The final of the district tournament between Fubayashi Naka, who has won with nine members, and Oonaka, who has all the prestigious Yokohama seniors, is finally a play ball! Daigo witnessed a short line with left-handed Michiru Mayumura and a second line with Idemitsu, and noticed Oonaka's intention to solidify the center line with the starting pitcher Uozumi and seniors. Then, the hit ball of top batter Senri in Fubayashi immediately hits the short road.

The final match with Oonaka, who has strong members such as Michibase Meimura. Nishina, the starting pitcher in Fubayashi, continued to make efforts from the beginning, but lost 5 points in the bottom of the 3rd inning due to lack of stamina and defensive disorder. It was Chisato of the center who gave up Nishina's continuation and took over the Fubayashi mound from the 4th inning. Chisato, who has experience as a pitcher in the Little Yokohama era, will be the first pitcher in junior high school. While my father, Fujii, is excited to watch from the stand, what kind of pitch will Chisato at his own pace show ?! ??

Fubayashi Naka, who had been suppressed to no hits, attacked Oonaka's second pitcher Idemitsu in the top of the 5th inning and returned 2 points in a timely manner such as Senri. However, Oonaka puts Tao Tsuchiya on the relief pitch and tries to escape by hitting Tao Tsuchiya on a short ground ball. Chisato pitched from the 4th inning and showed an unexpected (?) Good throw, but he lost his grip strength due to lack of stamina as early as the bottom of the 5th inning when he entered the second inning. Mutsuko can't pitch because of the restrictions on continuous throwing, so what's the point of standing on the mound?

Yayoi, who made an emergency pitch after Chisato, suppressed the Oo batting line, but the counterattack in Fubayashi was also blocked, and the district tournament final entered the final round with Oonaka's 3-point lead. In the 7th inning of desperation, while two outs in Fubayashi, the last chance of the first and third bases! Chisato, the top batter, persistently chooses a walk and puts pressure on the two-death base and Oonaka's base. Then, the batting order turns to No. 2 Tao Tsuchiya, who was sealed in a short ground ball at the front at bat.

A reversal drama of rebirth in Fubayashi, and a powerful batting line in Oonaka that attacks Yayoi who overcomes the failure of the elbow and throws power! The final match between Fubayashi Naka and Oonaka, led by Daigo, will reach a dramatic end. After such a fierce battle, Daigo returned home and exhausted his energy and physical strength. Daigo looks exhausted, but finds a piece of paper on the desk and changes the color of his eyes. It was a memorandum from my father, Goro, who saw the death battle with Oonaka from the stand.

The season has reached autumn. After the summer tournament, the Fubayashi Naka Baseball Club is forced to retire from the highest grade student, Tamba, and create a new team. However, there are only eight members left. Therefore, I asked Tamba, who retired, for a helper in the practice game on the weekend, and managed to continue the activity with nine people. Daigo and his colleagues are thinking about recruiting new members of the baseball club from current students in an attempt to solve the shortage of members. Under such circumstances, it is said that Chisato, a first-year student, has a new member recruitment attestation ...! ??

In Fubayashi, who was hit by a shortage of members again. Daigo called out to Chiyo, Chisato's older sister, who has experience in baseball, but she was easily refused. With the addition of the recommended admission group Short Chiba, we could barely secure the ninth member, but Anita and Chisato did not give up joining Chiyo. One day, Anita sends a meaningful letter to Nishina's shoe box. While expecting (?) Nishina headed to the courtyard after school ...

Fubayashi Naka, who realized the long-awaited practice match with the powerful Tsujido Gakuen Junior High School, managed to start the match by incorporating Chiyo, who wants to be a manager, into the starting lineup instead of Chiba who was hospitalized. However, since there are 7 girls, 10 points of handicap are given from the first time, and Daigo cannot hide his regret. In order to look back at Tsujido, Yayoi and Tao Tsuchiya fired a series of good defenses from the first time, and Daigo and Anita who stood at bat also caught the starting pitcher Oka and destroyed it.

Anita's home run and Chiyo, who made her debut on this day, also made a hit, and Fubayashi was able to pull away the powerful Tsujido at once. However, the pursuit is blocked by the "Mario Ball", which changes drastically with the fastball of Mario, a first-year pitcher who pitched in 2nd place in Tsujido. Mutsuko, the starting pitcher, aims to keep the lead and bring it to a cold win, but in the bottom of the third inning, Tsujido Naka goes on the offensive with Mario's double base. In addition, a hit ball flew in front of Chiyo who defended the left field ...! ??

Fubayashi was leading a large number of people in Tsujido during the practice game, but with the appearance of Tsujido Group A members, who are the original mainstay, the lead was suddenly reduced. In addition, Tsujido's catcher, Daigo and Mutsuko's teammates in elementary school, Mitsuru Sakaguchi (Mitsuru Sato), appeared, and Daigo and his friends couldn't hide their surprise. The light of serving as the same catcher as his father Toshiya, a former major leaguer. How good is that ability ...?

The Fubayashi Naka baseball club suffered a humiliating defeat in Tsujido. Yayoi and Tao Tsuchiya seem to have been blown away by the difference with boys. Nishina and Anita who vow to revenge and try to devote themselves to practice. Mutsuko has shattered her confidence as a pitcher. Then, Daigo seems to have lost his passion because he was overwhelmed by the light he met again. For Sekitori and Chiyo, who have no choice but to stare at such friends, Chisato at her own pace ... What is the one that holds the completely disjointed Fubayashi Nine back together ...?