“Dora” (Fernanda Montenegro) used to be a school teacher, but now she sits at a table in the station in Rio de Janeiro and writes letters for the illiterate traveller for a few réals a time. She thinks little of a woman and her young son who stop by, except perhaps that he isn’t the most trusting of boys, but when a tragedy promptly befalls this pair she finds herself being asked to write another letter by the young…