4 years have passed since Shigeno was traded, but the time has finally come for him to be traded back to the Blue Oceans. Having been gone for so long Goro is now unfamiliar with most of the neighborhood. He is enrolled at Mifune East Middle where a few of his old friends now attend. However the baseball club is in danger of being shutdown, and no one seems to recognize Goro nor do they know about his right shoulder being blown out. Goro recognizes Komori and saves him from being bullied, but now he's the target. Can he survive a batting challenge?

Yamane agrees to quit the baseball team leaving only Komori and Oobayashi as members. Goro shows off he is one of the best at soccer and Sawamura offers him any position he wants as a regular, but Goro turns the offer down saying he's still only serious about one thing. When Komori finally recruits some members he goes to the locker room to learn it has been vandalized. With witnesses having seen Yumane doing it Goro goes to confront them and learn Yamane has hated baseball since he ruined his shoulder. Goro says that hating something is no excuse, and if he really loved the game he would just change hands. The episode ends with Goro throwing a soft baseball with his left hand and stunning everyone on the roof.

After seeing what Goro has done Yamane decides to rejoin the baseball club and move to first base. Just as the teams practices are getting under way they learn they have an annual scrimmage game with Mifune West that is about to occur. As the game begins Mifune West manages to get players on base, leading to a bunt. They quickly learn that Yamane can't throw with his right hand, so they begin bunting every play. Seeing how Mifune West is playing Goro decides to put off his rehab and start pitching in the game. Little do they know that Toshi has decided to do a little spying. Seeing Goro at bat and pitching Toshi realizes his biggest rival is back. Mifune East goes on to win the game.

After winning their first game thanks to the powerful trio of Komori, Goro, and Yamane at the bat and Goro's pitching Komori decides to set up another scrimmage to get the team ready for the summer tournament. The team they challenge is Tomonoura, but little do they know they are led by none other than Toshi. Toshi refuses the game but says he will accept a challenge from Goro. Out of four picthes Toshi gets two home runs and the other two are wild pitches. Toshi then reveals Goro's pitching has a huge flaw in it, so Goro takes the pitching style to Shigeno to try and learn what that flaw is so his team can win the summer tournament.

The Summer Tournament is underway, and things begin poorly for Mifune East when Goro oversleeps. Goro manages to arrive with the game still in the first inning only to learn Mifune East is losing 3-0. Goro is put in and reveals that he has been learning to control his pitching and combine speed and control together. After rallying to win, thanks to a walk off homer from Yamane, the rest of the team goes to evaluate their next opponent while Goro goes to watch Toshi. While in the stands he meets the coach of Yakahama Little League who reveals Toshi's parents abandoned him a couple of years earlier and took his little sister with them leaving Toshi by himself. He now lives with his grandparents, but like Goro he must overcome the obstacle of not playing in the Senior Leagues if he is to become a Pro.

Oonuki, a scout for the prestigious Kaido High, arrives at the Mifune East versis Seibakun High game with the purpose of scouting Seibakun's 3 Senior League batters who play for Yokohama Senior. At the game however he is shocked to see how precise Goro's pitches are. He begins to envision seeing him at Kaido, but Goro tells him no since he knows Toshi desires to go there and he wants to play against Toshi. Hearing this Oomuki decides to scout Toshi and is shocked that a great catcher and potential cleanup batter is located on a no name team. He approaches Toshi afterwards though and tells him to give up Kaido because they want Goro, making Toshi mad and intensifying the rivalry the two already have.

Toshi makes a deal deal with Goro. The loser of the Tomonoura/ Mifune East game will stop trying to get a scholarship to Kaidoh. Goro doesn't want to attend Kaidoh in the first place, but Toshi is determined to prove he's a better player, and an early homerun put Tomonoura up.

The battle between Mifine East and Tomonoura heats up as Goro homers to tie the game forcing Toshi to remember why he decided to set the goal of becoming a Pro baseball player and going to Kaidoh in the first place. It quickly becomes clear this game will be a back-and-forth showdown with Goro and Toshi as the stars.

With two outs in the bottom of the seventh, it appears that Tomonoura has won until Toshi is forced to come on as the backup pitcher. He has speed but doesn't have the control he called Goro's weakness earlier. When Mifune East rallies to win Toshi feels devastated, but then he gets the idea of teaming up with Goro to form a battery to defeat Kaidoh. Kaidoh's recruiter though has different goals and approaches Goro's parents with a proposition. What will their answer be? Mifune East cruises to a Prefectural birth where they must face Kaidoh's Middle School in the first round. The outcome may force Goro to reevaluate his entire decision regarding Kaidoh.

With the baseball and softball seasons done for Mifune East, the two teams 3rd year classes get together and have a beach day. At the beach day the groups reveal their plans for high school, but Goro proposes an interesting idea, taking Kaidoh's baseball test with the intention of breaking down their system from within. Goro, Komori, and Toshi all agree with this idea, and training begins in earnest.

The Kaido baseball entrance test begins. More than 200 people have shown up, but Kaidoh says they won't advance more than 5 to their baseball team. Now Goro, Toshi, and Komori will put all their skills to the test to see if they can contend with new rivals, but when Toshi and Komori are matches up head-to-head in the third test, it will be time to say goodbye to an old favorite.

The final 20 people are divided up into 4 teams of 5 people and made to play extra innings of regular baseball. Only 1 team of 5 will advance into Kaidoh. Luckily Goro and Toshi are on the same team, but can these two gain the trust of their teammates who played in the Senior Leagues and question Goro and Toshi's skills because they didn't?

After passing the athletic exam Goro and Toshi must study hard in order to try and pass the academic exam to get into Kaidoh. Also, it's time to say see ya to Mifune East as the next part of Goro and Toshi's story begins.

All of the non scholarship Kaido players are taken to an island for strict training and to determine the most ideal position each of them should train out. Goro immediately doesn't like the training, but the threat of being cut from Kaidoh if he doesn't keep himself in line lies over his head and keeps him going.

After 3 months of strict training on the Island of Dreams, Kaidoh holds tryouts for each position. Goro fails the pitching exam, much t the shock of his friends that are there, and must find some other position he can excel at before the tryouts are done and he's dismissed from Kaidoh.

The 6 months on the Island of Dreams is coming to a close for the candidates for the Kaido baseball team. In order to determine which of the candidates will advance to the JV ranks the candidates are divided into 4 teams and a game is held .How much have Goro's skills grown in the outfield? Who will make the JV rank advancement?

Goro has been given one last chance to shine. Pitch 3 perfect innings of baseball and he'll move onto the JV team. If he fails, then he's headed elsewhere. The results are in. The new JV team is announced. Dream Island is dismissed, and the players have a few weeks at home, but Goro is surprised to learn his mom is in the hospital. What has his family been keeping from Goro?

The 25 players that advanced from Dream Island are put into a match against the 1st year elite scholarship students. Goro is forced to wait on the bench as the scholarship students pound multiple hits and runs against the Dream Island candidates. Can he convince the manager he can to go into the game and turn things around for his teammates?

The Dream Island team manages to get Goro into the game while trailing 14-3. Goro's fastball allows them to gain some confidence when Mayumara and two other first year scholarship students return. Can Goro finally get his revenge on Mayumura?

The Dream Island team has forced the scholarship players to use their starting pitchers. After getting through the knuckleball, they move on to Ichihara. Mayumara waits ready to go and attack if needed. Goro ignores the rules of the manual and is determined to show the only true way to get better is to wor on your own skills and prevail.

The Scholarship teams lead has been cut down to 13-12. They are forced to bring out Mayumura, who has taken a sudden interest in Goro. It is revealed that both Mayumura and Goro pitch a gyroball. The secret of that pitch is about to be revealed to all.

Goro is about to be dismissed from the JV team by the Saotome siblings. Goro and Toshi are able to learn why manual baseball has lasted so long after the death of the oldest Saotome sibling. Seeing no choice, Goro heads directly to Kaido on a training bike to talk to the teams manager. Instead he meets with Egashira who says if he can pass a test from him, he'll make sure Kaido doesn't cut him. Goro faces the varsity team's #4 batter in an attempt to show he can strike out any one.

Egashira cancels Goro's leave form from Kaido and reveals he plans to turn Goro into the marketing publicity of Kaido over the next two years. Goro learns the plot and reveals he has other plans. Goro wants to defeat the varsity team in the intrasquad scrimmage and then leave Kaido for good. After being locked in a confinement room for 4 days and being forced to rest his shoulder, Goro learns he still needs to learn how to manage his body. If he does so, his fastball will become one of the top fastballs even in the majors, and he should have the ability to beat the varsity team.

The intrasquad scrimmage begins. Goro is the starter and Toshi is given the start as the catcher. Egashira is present to watch the development of his plan, but when Toshi falls into a depression state because he doesn't want Goro to leave, it could spell doom for the Kaido JV's chances at defeating the varsity team and proving they are better.

Goro warns the varsity that if they don't come at him seriously, then he'll pitch a perfect game against him. Everyone is shocked to hear such a proclamation, but that doesn't shake Toshi from his depressed state. in the 7th inning Goro begins to tire, and it's up to Toshi to call the right signs to get the JV out of this jam as well as overcome his own fear of Goro leaving.

The score is tied 1-1, and Goro's speed has increased back to normal. With Toshi finally out of his slump, the JV looks to prove they have what it takes to become the next generation. After 1 1/2 years at Kaido Goro decides he will leave Kaido even if they lose the game, so it's time to say goodbye to Kaido High.