Ramón Alvia is a legendary professional boxer who has secured multiple international championships, but at nearly fifty years old, he is reaching the end of his career. Despite intense pressure from his dedicated wife, Carina, and his manager to retire and preserve his health for his two young kids, Ramón stubbornly resists fading into obscurity. His reality is upended when Débora, a fierce, stunningly beautiful 20-year-old female boxer from Misiones, arrives to train at his gym. Infatuation morphs instantly into a consuming, aggressive extramarital affair. Swept up in her raw physical energy and wild strength, Ramón feels his youthful vigor completely restored, leading him to abruptly abandon his family, move into Débora's apartment, and launch an ill-advised comeback tour. However, as the boundaries between the violence in the ring and the volatile, borderline-masochistic nature of their private relationship begin to blur, Ramón is forced to confront whether this late-career passion is saving his life or ensuring his absolute ruin.