Sunday Costs Five Pesos (1957)

In a small north Mexican town of Four Cornstalks, there is a rule that if a woman starts a fight on Sundays she must pay a fine of five pesos. Betra is engaged to Fidel. During siesta on a Sunday, Fidel goes to visit Berta and discovers she is furious with him because he has been calling on Celestina. Fidel insists it was business, but Berta doesn't believe him and breaks off their relationship. Berta's friends, Salome and Tonia, find out what has happened. Berta instantly regrets her decision. Salome comes up with a plan - Tonia will tell Fidel that Berta has tried to commit suicide by jumping down a well. Fidel believes this and is distraught; Salome tells him to light a candle. The plan is working when Celestina arrives, demanding a fight with Berta. This brings out Berta and the two women start hurling insults at each other. Fidel runs away. Tonia reminds them that the penalty for fighting on Sunday is five pesos. During the ensuing arguments, Salome winds up fighting Celestina, who wins. Celestina agrees to pay the fine. Celestina threatens to beat up Tonia and Berta on a weekday (so she doesn't have to pay the fine) and so does Salome (annoyed her friends didn't come to her rescue). Berta is worried. Then Fidel arrives explaining he has gotten a job away from town and that he still wants Berta, but he has to leave tomorrow. Berta agrees to marry Fidel (in part to get away from Celestina and Salome though she doesn't tell him that.)