After not holding a Leyenda de Plata tournament in 2003, it returned in 2004 with the qualifying cibernetico being held on July 16, 2004. the teams were: "A", Alan Stone, Atlantis, Averno, Mephisto, Misterioso, Jr., Satánico, Tarzan Boy and Virus. Team "B", Black Warrior, Perro Aguayo, Jr., Emilio Charles, Jr., Másacara Mágica, Místico, Negro Casas, Super Crazy and Volador, Jr.. The main storyline of the cibernetico was the building rivalry between Negro Casas and the recently rudo-turned Perro Aguayo, Jr. Aguayo cheated to eliminate Negro Casas and along with Atlantis were the last two surviving wrestlers. On July 23, 2004 Aguayo and Atlantis wrestled in a singles match, which unlike previous years was a "best of three falls" match, that actually went to four falls before Perro Aguayo, Jr. won. A week later Perro Aguayo, Jr. defeated El Felino, using the victory to further the storyline with Negro Casas, Felino's brother and corner-man for the night. Following his victory Perro Aguayo, Jr. broke the plaque with El Santo's mask on it, claiming that the Aguayo's were the greatest family in wrestling, refusing to accept a trophy with El Santo's name on it.
