A Hierro Muere plot
A former singer leads a secluded life with her fortune and Fernando, her lowly character cousin, who refuses to borrow more money. Elisa leaves prison and starts a new life as the personal assistant to the aging singer. She used to be a nurse but is no longer allowed to practice this profession. Fernando is introduced to Elisa and together they hatch a plan to poison the lonely woman and then use her money abroad. The alibis are well planned, but it's a saying, "Whoever kills one with the sword will die by the sword himself."