Underground Sound - Lucha Underground recap for September 21, 2016

Rey Mysterio Jr. and El Dragon Azteca Jr are training. Azteca wants to destroy Pentagon Dark, but Rey tells him that Pentagon has many enemies and to let them destroy him as they have their own fight...one more dangerous than him. Suddenly, Chavo Guerrero Jr. shows up, and El Dragon Azteca goes after him. Rey tells Chavo to let him go, and after he does, he tells Rey he's never told Azteca about "La Familia Guerrero," and that it looks he may have to be the one to teach him.

Dario Cueto is in the temple to spin Dario's Dial of Doom and see who gets a shot at the Lucha Underground Championship against his brother Matanza Cueto. After making fun of Son of Havoc by saying nobody believed he could beat Matanza, he spins the wheel. Tonight, it is The Mack's turn.

Matanza Cueto retains the Lucha Underground Championship against The Mack.

Somewhere on the open road, Son of Havoc is watching Famous B's commercials, and says he can't stand Famous B. Neither can Mascarita Sagrada, who is watching them with Son of Havoc at Havoc's house. Havoc's mom has also made some Bagel Bites.

Johnny Mundo shows up in Dario Cueto's office, demanding a shot at the Lucha Underground Championship. Cueto tells him he has a Trios title shot tonight, but Mundo doesn't care and says he's not competing tonight and is heading to the dojo. He tells Cueto to think long and hard about how he's treating him. Taya, who is with Mundo up until this point, eagerly steps in as Mundo's replacement, much to Cueto's delight.

Before the next match, Dario Cueto shows up and says Cage and Texano have a lot in common, including losing out on unique opportunities. He announces this match will be not for a unique opportunity, but for "the ultimate opportunity," and only the winner will find out what this is.

Cage beats Texano. After the match, Dario Cueto then tells him that if he wants the ultimate opportunity, he must beat Texano two more times as this was only the first match in a Best of Five Series. With this victory, Cage leads 1-0.

Dario Cueto opens a box and gets a 423-GET-FAME hat inside. He also opens an envelope, which contains some pretty gruesome pictures. He is looking through them when El Dragon Azteca Jr., and Cueto throws them in the trash. Azteca wants a match with Pentagon, but Cueto says he can't just make a match whenever he wants. He likes the idea, though, and pencils it in after he tells Azteca he has the match. Ricky Mandel, whom we haven't seen in some time shows up and asks when his next match is, and he notices that the pictures are on the desk. Cueto hands him the pictures to Mandel to get them out of his hair Chavo Guerrero Jr. then shows up, and after Ricky Mandel tells him that now is not a good time, Chavo tells Cueto that they need to talk.

The Super Friends (Fenix, Aerostar and Drago) retain the Lucha Underground Trios Championships against The Worldwide Underground (Jack Evans, "The Darewolf" PJ Black, Taya). Johnny Mundo shows after the match, and he, PJ Black and Taya attack the champs after the match. Sexy Star shows up and clears the ring, but not before getting a shot in on Taya.

Dario Cueto talks to Rey Mysterio Jr. about next week. He tells Rey that Azteca came to him demanding a match against Pentagon Dark, and that he has pencilled it in. Dario agrees with Rey that he's not ready, and that Azteca will be facing Chavo Guerrero next week, with the winner facing Pentagon. Cueto also tells Rey what happened to his tribe, and makes Rey Mysterio Jr. the guest referee for the match, going so far as to put it in ink instead of in pencil.

Here are the highlights from tonight's show!