Blue Lock's U20 arc revolves around the intense match between Blue Lock Eleven and Japan's U20 team, which pits them against each other in a battle for supremacy. With their skills and mentality pushed to the extreme, the players evolve dramatically, adding new weapons to their arsenal. As Blue Lock Eleven surprises Japan's U20 team with an unexpected win, Jinpachi Ego gains the power to shape the future of the country's football.