TripleMania XXXI: Tijuana was a professional wrestling event produced by Asistencia Asesoría y Administración (AAA). The event took place on July 15, 2023 in Estadio Caliente in Tijuana, Baja California.

Ignacio, a disrespected cook at a Mexican monastery, can barely afford to feed the orphans who live there. Inspired by a local wrestling hero, he decides to moonlight as the not-so-famous Luchador "Nacho Libre" to earn money for the monastery -- not to mention the admiration of beautiful nun Sister Encarnación.

An evil space vampire arrives on Earth with his army of alien midgets seeking a cosmic princess who befriended a couple of lucha wrestlers.

Dr. Frankenstein and her assistant, Dr. Yanco, are going to bring one of their experiments to life in Santo Vs. Frankenstein's Daughter. She intends to use a monster named Ursus to do her evil bidding. Using a youth serum to retain their vitality, the doctors set their sights upon none other than El Santo. They need his super human blood to regenerate a stronger youth serum. They kidnap Santo's goddaughter, Norma and lure him into Dr. Frankenstein's lab where he is captured and enslaved. Will Santo make it out alive?

Innocent women are being kidnapped and used as guinea pigs for a brain transplant experiment. The diabolical Dr. Frankenstein continues his quest to perfect his brain transplant operation to bring back his deceased wife at any cost - even if it means playing with the lives of others. El Santo and Blue Demon are called in to help when their friend Alicia becomes Dr. Frankenstein's next target. It'll take both heroes to go up against the dastardly doctor and go mano a mano with his super strong zombie Golem.

Santo, the saint of the wrestling ring, faces off against an evil voodoo priestess intent on making a more powerful atomic bomb!

The sordid lives of an addict, an ex-con, and a luchador collide when an organ harvesting caper goes very, very wrong.

In Caracas, a massively built dock-worker has beef with munitions-smuggling gang, and meanwhile he's recruited to perform as a lucha-libre wrestler.

Agent Joaquin recalls his latest mission while lying wounded in an ambulance: Joaquin has infiltrated into a band of smugglers. When the villains learn the truth about him, they kidnap Jouqin's fiancee. Santo comes to her rescue and fights the band.

Tourists visiting the pyramids in Mexico experience a string of deaths and disappearances while staying at a nearby hotel. Police investigators Fernando and Cornado are assigned to the case and attempt to solve the mystery with the help of reporter (and girlfriend of Fernando) Veronica and the wrestler Santo.

El Santo, the masked Mexican wrestler, investigates a series of kidnappings. He discovers that the mysterious Doctor Caroll is using the victims as part of his experiments to develop an army of monsters. Naturally, El Santo is able to overcome them all - with wrestling!

In the Age of the Inquisitions, 1603, Santo, El Enmascarado de Plata, is being laid to rest by a group of monks. The Black Hood, an axe-wielder and a tormented soul who sold his soul to the devil after losing his love to El Santo, appears at the foot of his tomb and swears to seek his revenge no matter how many centuries it takes. El Santo is the chosen one and is sworn to fight for good and justice at any cost. After he finds his love, Alicia, dead at the hands of the Black Hood, El Santo must trust his faith and use his strength in this battle of good vs. evil.