Daniel, a young boxer on the point of winning the title several times, is beaten yet again and commits a robbery that lands him in jail. Guillermo, a self-destructive policeman tormented by his latent homosexuality, blackmails Daniel into committing a murder behind bars. In exchange, Daniel gains his freedom and returns to the only thing he knows how to do: box. But this time the search for pain to relieve the guilt has made his conservative style more aggressive. He remembers the last conversat...