GOTHAM CITY, MARCH 15, 1995

(Gaim is seen fighting Bujin Gaim in the middle of the streets.)

Gaim: (grunts) Damn, this is getting worse.

Bujin Gaim: (giggles evilly) You can't rescue those worms. I cannot be stopped by a weak hero such as you!

(He kicks him and grabs him by the throat.)

Bujin Gaim: You're no longer worthy of being a Kamen Rider. HAHAHAHAHAHAHAHAHAHAHA!!!!

CLOCK UP!

(Suddenly someone dashes at Bujin Gaim and grabs him from behind before throwing him down before punching his helmet.)

CLOCK OVER!

(Bujin Gaim gets up and sees Kamen Rider Gatack and an incoming Kamen Rider Tiger.)

Bujin Gaim: You... bastards!

Tiger: (pulls out a card) My turn!

Gatack: After you.

STRIKE VENT!

(Tiger then charges at Bujin Gaim and scratches him with his Destclaws as Gatack activates his Clock Up command once again.)

Gatack: Clock Up!

CLOCK UP!

(Gatack then punches Bujin Gaim relentlessly until he kicks him to the wall.)

CLOCK OVER!

(As Bujin Gaim crashes into the wall, Tiger and Gaim join him as they prepare to execute their finishers.)

ORANGE AU LAIT!

FINAL VENT!

Gatack: Rider Kick!

1, 2, 3! RIDER KICK!

(They combine their finishers as Destwilder drags Bujin Gaim to them, and Tiger scratches Bujin Gaim while Gaim slashes through him, and Gatack kicks him, finishing the Dark Rider. As they walk away, a drone is seen watching them. The scene then cuts to Amanda Waller in her base as he contacts her units.)

Waller: Attention all units! Activate Task Force X! (stern) It's another suicide mission.

(Meanwhile in an Unknown House, three adult males are seen in their room. They're none other than Tenho Iida (Tenya Iida's Grandfather), and Kai Todoroki (Shoto Todoroki's Grandfather) and Christopher Mosley as they make a toast.)

Christopher: A toast for our victory against Bujin Gaim.

Tenho: Cheers.

Kai: For the innocent lives we've saved.

(They then do their cheers, and drink as they resume their conversation.)

Christopher: You think someone will go after us?

Tenho: Considering a problem named "Amanda Waller", I don't doubt anything.

Kai: I don't trust her either. She's a menace. I mean, I don't trust any so-called superheroes. They don't give a fuck about keeping secrets, just like our former teammates in Japan.

Christopher: Good thing we already have someone we can trust.

????: I hope I'm not too late, boys.

(Christopher turns to see the head of the Plumbers, Max Tennyson, and bows to him.)

Christopher: Professor Max.

Max: No need for formalities.

(Then Molly Gunther comes in and stands beside Max.)

Molly: I hope you don't mind if a lady joins in.

Max: You guys are keeping a good work, just like the Power Rangers or Super Sentai, fighting for humanity-in-secrets for freedom, peace, and harmony, both Monarch and Plumbers are the special defense force to socialize both ancient species and intergalactic beings.

Tenho: Monarch? You mean...

Max: That's right. Ishiro Serizawa who is in charge of spectating all kaijus and titans who lived before humanity. He lives in Daikaiju-Verse while we live in Megaforce-Verse. 

Molly: Godzilla, Ultraman, Kamen Rider Ichigo and Akaranger are the world's vigilant heroes whose saving the world from numerous monsters, devious aliens, humanoid creatures, rogue titans, menacing robots, criminals, villains, fake heroes, man-made mutations and other crimes.

Max: That is why we collide forces together, and Optimus Prime fought against Decepticons who destroyed other cities, restoring balance and saving humanity. There's also a Dinobot named Grimlock, who became the next protector of the universe.

Molly: We have worked under Plumbers for many years ever since the Aliens first started to come to Earth, to study these intergalactic species to survive as long as we co-exist with them.

Christopher: Indeed.

Tenho: For the sake of making the world a better place.

Kai: To be honest, you are more of a family to me.

Christopher: After all, we are heroes-in-secrets, fighting in the shadows. We are always fighting crime, rapists, traffickers, molesters, robbery and others. Not becoming famous heroes, we treat others as family. A big family fighting for our loved ones. Before I met other friends, we all treat other as brothers and sisters. Nobody wants to separate from each other.

Max: Reminds me of when you met my grandchildren: Ben and Ryan.

Tenho: How many grandchildren do you have, Max?

Max: I have Ben, Ryan, Sebastian, Ace, Iris, Mika, Bryan, Henry, Gwen and Peter.

Tenho: (shocked) Wow! You have a lot of grandchildren.

Max: Yep, seven boys and three girls. My father is Ingram Tennyson.

(They resume their conversation as a shooting star is passing through outside the house.)

(Ten months later, Christopher is resuming his good life as he and his teammates found their soulmates and they joined the Plumbers as well. As they go to a halloween party, Unbeknownst to them, Black Spider is seen watching them from a distance as he contacts waller.)

Black Spider: I found them, Mrs. Waller.

Waller: (intercom) Good, don't let them out of your sight.

(Black Spider nods and prepares to follow them as a male shout is heard.)

????: V3 KICK!

(Black Spider turns to see a certain Kamen Rider who kicks him ad he falls and explodes. He then goes to the rooftop of a building where a Halloween Party is happening. As Kamen Rider V3 reverts back to normal, he sees a mecha flying as Amuro Ray comes out of it.)

Amuro: You took care of Black Spider?

Shiro: Yes, we cannot let Waller recruit Christopher. He's our ally now, no fakers will try to take our friend away.

(They then keep on watching Christopher as he gets married with Joanna Olsen (mother of Jimmy Olsen), and they have a child named Nolan Olsen, who is then introduced to the Autobots, Kamen Riders, Super Sentai and Mecha Pilots. Nolan became Batman since his mother passed away, and met a woman named Olivia since he saved her from Bane. He also had a brother named Louis Olsen, who was dating a girl named Ursula Smith. Nolan then approaches Olivia as he pulls out a wedding ring and kneels as she gasps and covers her mouth.)

Nolan: Olivia Quinzel, I know that we've been together ever since high school. You never told everyone that I'm Batman for many years, you and I meant to be together forever. So, will you marry me?

(Olivia smiles in tears.)

Olivia: Yes, I will.

(He puts the ring on her first finger, he got back up as he kissed her. But, two certain Heisei Heroes were watching them from a distance. It's two members of the Plumbers: Edward Yale, the real father of Kabuto Yale, and Faust Hart, father of Lucas Hart.)

Edward: (chuckles) I remember when Amuro and Shiro left.

Faust: (Smiles) Yep, the same routine like Christopher and Joanna.

GOTHAM CITY, APRIL 16, 2017

(When Olivia gave birth to a baby boy name Ivan Olsen, Nolan always wanted to tell his son about Plumbers and the Heroes of Three Eras: Showa, Heisei and finally... Reiwa. Right now, Ivan was six years old same as his father's age. Nolan is seen driving his Batmobile until someone shoots it, and he stops as he hops in his Batman suit as he faces Deathstroke, Mr. Freeze and Clayface.)

Clayface: You dare stand against us?

Batman: (scoffs) So what?

Mr. Freeze: Because of you, Nora is dead! Now I shall avenge her by freezing you to death!

Deathstroke: But first things first. KILLER CROC!

(Killer Croc then holds him from behind, and then Deathstroke stabs through him as Killer Croc drops his body. The villains laugh deviously.)

Deathstroke: You've made it personal when you killed my son Grant! 

Clayface: And soon the rest of these worthless citizens of Gotham will join you in hell!

(All four villains laughed together, and the rain started pouring down as the villains walked away from his dead body.)

(Four days later, Olivia got pregnant again, but she went to her husband's funeral along with her son as they mourn for Nolan. Her brother-in-law Louis Olsen-Smith and her wife Ursula Olsen-Smith come in as Ursula is carrying their son Han Olsen-Smith. Ivan cries for his father's death. But, they're not the only ones who came to his funeral... Max Tennyson and Molly Gunther come in as well along with Max's grandchildren: Ben, Ryan, Sebastian, Ace, Iris, Mika, Bryan, Henry, Gwen and Peter. Even the Dinobots came to the funeral.)

Slug: What should we do, Grimlock?

Grimlock: (closes eyes) ...We wait till he grows up, and train him to become the hero of Gotham and Nashville. We cannot let Waller take him away, she's gonna have to go through us.

Slash: Yeah, those guys are nothing but trouble.

Sludge: We know that Oswald Cobblepot, The Penguin is the responsible for this, we cannot let him get away from this. He'll go down for good.

Grimlock: We can let them try, after all..we are the first heroes who rise in the year of 2015. It's time for the new era for the very first time of... the grandson of Kamen Rider Gaim! It's time to defeat the villains... without mercy. We'll blast them with powerful fire beam or Rider kick only. Those villains don't deserve to live, we will be the heroes of the world. We're doing this for Optimus Prime!

(The screen then fades to black)

Grimlock: We'll become vigilantes!

(As the screen shows a swarm of bats, the title is shown at the screen.)

WARNER BROS. PICTURES PRESENTS, A LEGENDARY PRODUCTION PRESENTATION

(A footage shows the video of Batman's shows back in 1970s, he always saving the citizens of Gotham from villains such as Ra's Al Ghul, The Joker, Mad Hatter, Man-Bat and other villains

IN ASSOCIATION WITH TOHO & TOEI COMPANY LTD.

(Another footage shows the video of the Plumbers witnessing Optimus Prime fighting several enemies like Megatron, The Fallen, Lockdown, Sentinel Prime, Galvatron, Quintessa Prime, Thunderwing, Scourge, Airachnid, Starscream, Soundwave, Shockwave, Nemesis Prime, Unicron and others.)

DC STUDIOS PRESENTATION

(The blue prints of the four Kamen Riders prepare to take on villains as an army of multiversal heroes and villains march forward led by Regime Superman.)

AND JEYMISPEIXOTO FILM PRESENTS

(It shows the logo of the Plumbers, and the three eras of the Megaforce-Verse.)

SHOWA OF MEGAFORCE ERA: OPTIMUS PRIME, LEADER OF THE AUTOBOTS!

HEISEI OF MEGAFORCE ERA: GRIMLOCK, MONARCH OF THE DINOBOTS!

AND REIWA OF MEGAFORCE ERA: ULTRAMAN Z

And finally, the new era of the new Justice Leaguer...

THE LEGEND OF KAMEN RIDER ZANGETSU, SAVIOR OF GOTHAM AND NASHVILLE!