Taking place after the epilogue of episode 25, the citizens of Stern Bild are gearing up to celebrate Justice Day, a momentous occasion that commemorates a goddess who, long ago, brought justice to the people after a time of calamity and corruption. This festival is not just a day of festivities; it represents a time of reflection for the people in their pursuit of a just society. Concurrently, the media company Apollon Media has undergone a significant change in ownership, with Mark Schneider at the helm. He discovers that the hero division, especially the Second League, is lagging in profitability and decides it is time for some much-needed reforms.
When a purse snatcher is pursued by the Second League heroes, it is Barnaby who arrives just in time to put an end to the chaotic pursuit, following a rather destructive crash courtesy of Tiger. While the heroes manage to thwart a bank robbery, Rock Bison struggles to find his place within the fluctuating hero landscape, desperately trying to replicate Sky High’s iconic pose. In light of this, Barnaby expresses his desire to return to the First League, where he feels his abilities would be better utilized.
In a dramatic twist, both Tiger and Barnaby are summoned by Schneider, who announces their unexpected promotion back to the First League. However, at the ceremony, to everyone's surprise, Schneider introduces Golden Ryan as a new hero to take Tiger's place, deeming Kotetsu past his prime. Accepting this transition, Kotetsu prioritizes his partner’s success over his own aspirations.
On their first mission together, Barnaby and Ryan successfully manage to prevent a tower from collapsing, but Ryan’s overreliance on his gravity powers isolates the team from giving assistance. The following day, a devastating notice reaches the Second League when Schneider's secretary, Virgil, informs them that their airtime segment has been canceled, leading to a period of introspection among the heroes. In an effort to uplift Kotetsu's spirits, Kaede, his daughter, calls up Karina, also known as Blue Rose, for help.
As Justice Day unfolds, strange happenings surface, with witness accounts suggesting the emergence of the Legend of the Goddess. The heroes are informed of three new NEXT threats: Richard Max, a hyper-speed boxer; Kasha Graham, an illusionist belly dancer; and Priest Johnny Wong, an elderly figure who can send people into nightmarish comas. The confrontation escalates when Fire Emblem faces Wong and is trapped in a coma that forces him to confront his past regarding his identity, all the while causing his powers to spiral out of control. Blue Rose steps in to contain the chaos, showcasing not only her powers but also her unwavering support for her fellow heroes.
As the festival day arrives, Kotetsu’s family joins the celebrations, courtesy of Kaede’s acquired tickets through Blue Rose. Encouraged by her, Kotetsu embraces his heroic role, which brings him joy. Yet, the festivities are abruptly interrupted when the three NEXTs cause an implosion beneath the parade, triggering the Goddess’ final act. Realizing the imminent crisis, Kotetsu rushes back to the hospital to assist.
The ensuing battles are intense, with each hero facing their respective foes: Blue Rose and Dragon Kid confront Wong; Sky High, Rock Bison, and Origami Cyclone take on Richard Max; while Barnaby and Ryan team up against Kasha. A sudden twist occurs when Schneider is abducted by a monstrous robot, prompting Agnes to reinstate Tiger for the rescue mission, recognizing his indispensable capabilities.
Amidst fervent battles, notable declarations are made. As Dragon Kid praises Fire Emblem's inherent strength and kindness live on television, he awakens from his coma, igniting his resolve to assist the team. In a climactic showdown, Barnaby and Kotetsu unite to confront the mastermind behind the chaos, Andrew Scott, who holds a personal vendetta against Schneider. The heroes engage in fierce combat, thwarting Andrew’s efforts to exact revenge, leading to a dramatic resolution where the duo showcases their elite teamwork and ultimately defeat Andrew just as Kotetsu's powers begin to wane.
With the dawn breaking on their victory, Tiger and Barnaby receive accolades for their heroic comeback, drawing cheers from the citizens of Stern Bild. With Agnes now in charge, Wild Tiger is officially reinstated, allowing him to continue his partnership with Barnaby. The aftermath of the battles sees a revitalized Second League and a victorious cleanup effort. However, as changes unfold, Ryan receives an enticing offer from an overseas firm. In a playful post-credits scene, Tiger expresses a desire to take the wheel, which prompts an immediate and humorous retort from Barnaby, stating, "no."
