What Is Narcos Season 4 About? The fourth season of the hit Netflix series is shifting away from Colombia to Mexico. Narcos: Mexico "will explore the origins of the modern drug war by going back to its roots, beginning at a time when the Mexican trafficking world was a loose and disorganised confederation of independent growers and dealers," according to a press release. Viewers will get to see the rise of the Guadalajara Cartel during the late 1970s and '80s. Image Source: Netflix