35 forwards remain after the 2nd selection at Blue Lock. With a big match against Japan's U-20s in three weeks, Ego announces that the team will be centered around the top 6 players. The tryouts for the rest of the positions begin.

Isagi is chosen as Team A1 along with Nanase and Hiori to play against Team B1, which includes Karasu, Otoya, and Chigiri. While Isagi struggles to find a way into the game, Chigiri and Hiori demonstrate their worth.

Seeing how incompatible Rin and Shidou are, Isagi hopes to take advantage of it. However, his physical abilities are not enough to get him where he needs to be. Then, Hiori suggests that Isagi does the thinking "on reflex."

Isagi looks back and analyzes what he did when he scored a goal on reflex. Then, when the second match begins, Reo finds his new playstyle: Chameleon.

The tryouts are complete, and Isagi is chosen for the starting lineup. But Shidou is nowhere to be seen... It turns out Sae has picked him to join the U-20s. Meanwhile, Ego begins the final training camp, where he discusses the secret of "flow."

The exhibition match between Blue Lock and Japan's U-20s has finally kicked off. The first play Bachira and Isagi set up has been swiftly shut down by the U-20s' captain, Aiku, and Isagi finds a new challenge in him.

When Itoshi Sae scores the first goal of the match, the crowd goes wild, making it clear to Team Blue Lock that they're here to watch Sae. Rin changes the strategy and Nagi makes the memorable first goal for Team Blue Lock.

Rin and Sae's sibling match goes to Sae as he takes the ball. But Niko, Karasu, Otoya, and Chigiri set up another goal chance, and Rin scores despite shooting on his non-dominant leg. At 1-2, the U-20s are finally ready to go all out.

Isagi, Bachira, and Chigiri's families are happy to see their sons on the field. Meanwhile, we get a glimpse of what transpired between Rin and Sae. Sae is about to quit the match, but he decides to stay when Shidou is thrown into the fray.

Shidou joins the match in the second half and throws everyone off with his crazy play. After he scores a free kick, Chigiri and Niko get swapped out with Reo and Hiori. With Blue Lock’s new formation, Reo proves his worth with Chameleon Defense.

Shidou enters the "flow" and unleashes his Big Bang Drive to score another goal. Isagi demands that Ego let them win, and Ego subs Barou in to cause chaos on the field. And the other players start to find their "flow"...

As Aiku looks back on why he converted to a defender, the U-20s uses their specialty quick attack. Reo copies Nagi's skill to hold them off. Isagi yields the last step to Rin, which is stolen by Barou who has waited for the chance in the dark.

Seeing the players' upgrade, Sae takes the play to the next level. In response, Rin starts to align his thought process to Sae and drastically changes his play style . Then Rin realizes that Blue Lock players have been keeping up with his play.

Rin enters his “flow,” and Isagi’s faith in Rin’s trance state pays off when Isagi applies what he’s learned about the mechanism of luck back when he lost to Rin. Can the Blue Lock XI beat Japan’s U-20s, and what awaits them after the match?