El Chema, a spin-off of the popular series El Señor de los Cielos starring Mauricio Ochmann, is the story of Chema Venegas first years working in Mexicos world of organized crime and his ascension until becoming the renowned cartel leader seen in El Señor de los Cielos.Chema began committing crimes as a child, transporting marijuana in his backpack from one side of the border to the other. He worked his way up to being a hit man and then a skillful boss who left a trail of blood everywhere he went, and he eventually became one of the most wanted drug lords, always outsmarting authorities. The story also narrates the various romantic relationships that forever marked Chema and turned him into the despicable human being he became, from his first failed relationship as a young man to his obsessive relationship with Rutila Casillas, daughter of his nemesis, Aurelio Casillas (El Señor de los Cielos).