Grigor, a nondescript, naive man whom everyone mockingly calls Gringo, begins to hear a voice. This voice claims to represent the truer part of him. And it begins to urge him to avenge the undeserved humiliation and abuse he is constantly subjected to. In doing so, he will break with outdated prejudices, become a new man. Grigor resists, but can he resist temptation and the truth of evil? The voice falls silent when the crime is committed. Has Grigor himself committed it? And what kind of man is he then?