//------------------------------//
// Trailer: Riders of Two Worlds 
// Story: To Build the Winning Formula 
// by Snow Fire 
//------------------------------//


A transcending amount of power is being sought, by the scientist of evil.






Our story begins in some kind of underground tunnel, where multiple strange machines could be found. Each one was beeping and buzzing, doing whatever it was they were designed to do. And standing beside them was a lone figure, whose features were hidden by the shadows that surround him.

"Soon," he said, "Soon my perfect world will be born."






And with it, the fate of not just one world will be placed in danger.






"He's trying to merge our world?" Flash asked.

Twilight nodded, "But he doesn't know how dangerous doing that could be. He could end up destroying both worlds."






Against such a threat, two heroes might not be enough.






Build and Cross-Z stared at the monsters, having no idea what they were looking at.






But luckily...they're not alone.






"Don't worry," the man said. He then reached into his pocket and pulled out what looked like a thick smartphone. "I got this."






A new ally, has arrived.






"HENSHIN!"

"DOWNLOAD!"

Flash and Sol were both stunned by what they'd just seen. "Who...who are you?" Flash asked.

"Kamen Rider...CYBURST!"






New friends.






"I'm Jet."






New enemies.






"His name is Doom Raiser."






And the return of those thought lost.






Flash's heart was beating a mile a minute as he stared at the man in front of him, unable to believe what he was seeing. "...Dad?"






Now, to save the ones they love.






"He wants us?" Rainbow asked.

"He wants our Equestrian magic," Sunset corrected.






They'll need to work together.






Build and Cyburst stood side by side, both getting into a fighting stance.






But this battle, won't be so easy.






The group began to shake at the sight of the army in front of them. It looked like there were hundreds of them, maybe even thousands.





"The world will end in twenty-four hours."





"Augh!" Cross-Z cried as he was knocked back.





Build and Cyburst weaved around on their bikes, avoiding the many explosions that were being sent their way.





The people of Canterlot screamed as they ran, only for the meteors to come crashing down around them.






Will our heroes fall?






The two riders yelled out as they were blasted off their bikes, crashing into the ground and rolling across it.






Or will they stand tall against the ones threatening their world?






"We can't just give up!" Flash told them, "Not like this. We have to fight, until the very end!"





"Son," Trail held out his arms, "Help me make a world we can all be happy."





Flash moaned as he slowly pushed himself back to his feet, flinching at the pain running through his body. "I..." he took a deep breath, "I WON'T LET YOU DESTROY MY WORLD!"





With that, Flash and Jet took a fighting stance before crying out in unison. "HENSHIN!" Seconds later, they were morphed into their suits. The two riders stood side by side, ready to face off against their enemy.





And with a mighty outcry, they charged forward into battle.






To Build the Winning Formula:



Riders of Two Worlds.