Eugenia Roca

Don Agustín, a school teacher, visit the family of his former student Paco. Paco's mother asks don Agustín to exert influence over her son to make him being successful. The old professor accepts the challenge pressured by his sister, eager to spend all her money playing bingo. But don Agustín soon begins to suspect that the mother of Paco holds the oldest profession in the world.

Joaquin Monegro feels a huge hatred for Abel Sánchez, who was once his best friend. Over the years, Monegro marries without love, and tries to have his children marry, but not forgetting Abel so far.