With the death of her husband and the absence of her son, Esmeralda has lost interest in life. Living in a small town, within the walls of her house, she regains hope when a baby pig comes into her life.

Spain, 1937. Ramón Mercader, a young communist combatant, is recruited and trained by the Soviet intelligence service to participate in a top secret mission ordered by the ruthless dictator Joseph Stalin: the assassination of his former political rival, Leon Trotsky, who is living in exile in Mexico.

The attack on a popular singer known as Pachito -who becomes the favorite candidate to win the presidential election in an imaginary Latin American country- is the starting point of several stories, including: the alleged murderer, a police officer investigating the disappearance of the murdered body and an architect hired to design the mausoleum to the memory of the possible dictator.

One couple (Carlos & Irene) are having troubles, because he suspects that Irene's hiding something about her past in Russia. To make things worst her ex-husband goes to Mexico and tells Carlos that her other ex-husband also is going to claim her as his property.