Nobuto, a dedicated boxer, can't seem to win a match, while his friend Kazuki is becoming a rising star and may win the championship. Meanwhile, Kazuki is engaged to Chika, Nobuto's first love.
A businessman, Tsuda, runs into a childhood friend, Kojima, on the subway. Kojima is working as a semiprofessional boxer. Tsuda soon begins to suspect that Kojima might be having an affair with his fiancée Hizuru. After an altercation, Tsuda begins training rigorously himself, leading to an extremely bloody, violent confrontation.
MMA legend Patton James, now a commercial fisherman, is pulled back into the cage when his brother is in danger. Reuniting with his old coach Sammy, he commits to one final fight in one championship against the brutal champion Xavier Grau.
When apathetic gamer Nagi agrees to join his rich classmate Mikage in soccer, their partnership leads to the famous Blue Lock program — and to changes.
Up-and-coming sports reporter rescues a homeless man ("Champ") only to discover that he is, in fact, a boxing legend believed to have passed away. What begins as an opportunity to resurrect Champ's story and escape the shadow of his father's success becomes a personal journey as the ambitious reporter reexamines his own life and his relationship with his family.