A vicious mobster (Alberto Estrella) blackmails aging fighter Jose Luis (José Luís Mósca) into one last bout, but when an unexpected injury sidelines Jose, he must help rising star Francisco (Francisco Fortuna) train to take his place. Working together to prepare for the match, the two fighters must also find a way to keep Jose's family safe from the crime lord and his brutal thugs.

The 1948 speech called "Yo Acuso" resulted in Pablo Neruda going under hiding for 13 months and the police searching intensively for him.