Encouraged by his wife, Mexican presidential candidate Luis Donaldo Colosio resists political party pressure and writes a speech that sticks to his principles.
Three suspects are arrested in Tijuana for the murder of Luis Donaldo Colosio. Police Chief Benitez becomes even more suspicious when the investigation gets immediately taken out of his hands by orders from "above."
At Colosio's funeral, Diana Laura sees suspects at every turn. Noticing Mario Aburto's resemblance to a new murder victim, Benitez formulates a new theory.
A confession from her driver spurs Diana Laura to visit General Garces. Miguel Montes formulates his own theory about the murder. Benitez receives a key piece of evidence.
Montes interrogates the Tucanes. A new detail is spotted in the assassination video by Mario Aburto's brother. Salinas announces a political appointment that makes Diana Laura suspicious of the party.
In light of new evidence gathered by Benitez which points to two shooters, Montes strengthens his theory of a lone gunman. Diana Laura confronts Montes and begs him for an impossible favor.
Montes receives a new piece of evidence that forces him to make a decision about the case. Rubi confronts Lopez Riestra. Diana Laura has parting words for Montes.