What If Ash was in Pokemon Horizons?

Operation Infiltration!

The trainers stand at the wingdeck looking into the night sky, seeing Amethio flying towards them on his Corviknight. He lands on the Brave Olivine, "Greetings," he said, "I'm glad we were able to meet."

"So, what's this about?" Liko asked, "Why'd you want to see us?"

"Zirc and Onia have located an Explorers facility hidden away," Amethio explained, "It most likely houses the five Hero Pokemon."

Roy gasped, "Really?"

"But, we already tried to free them before, how is this time gonna be different?" Dot asked.

"Simple," Amethio replied, "We trick them, make them think we're ambushing from the roof. But we'll have someone break into the basment, I think you can handle hacking inside."

"But, would we be enough?" Ult asked, "I mean, they could find out at any time."

"Which is why I made sure we have everyone available." Ametho explained.

Everyone looked up at the sky, seeing a hot-ait balloon with a Meowth shaped balloon flying towards them and landing on the airship. Jessie, James, Meowth, Wobbuffet and Silver step out.

"You guys are helping us?" Ash asked.

"Yeah, da boss has been acting strange, though we went over this already." Meowth explained.

"I honestly want both organizations destroyed and defamed." Silver added, "I have a personal vendetta between the Rocket Boss."

"We strike tonight," Amethio explained. "We'll meet with Zirc and Onia and ambush whoever guards the roof. Liko and Dot will sneak over to the basement so Dot can hack the lock."

The two guards stand watch at the facility's roof. They hear the sounds of loud cries coming from the skies and spot Amethio, Zirc and Onia flying towards them on their Corviknight and Skarmony. "Aren't those the traitors Spinel told us about?" One guard asked.

"Yeah, think one of them is Gibeon's grandson or something." The other responded, "Anyway, we outta take them to Spinel."

The two are shaken by the sound of a loud cry from another direction, seeing Roy and Ult flying toward them on Roy's Kilowattrel.

"And some of those Rising Volt Tacklers!" A guard grinned, "Spinel's gonna be so proud when we beat 'em to a plump!"

The guards are suddenly hit by the move Supersonic from behind, they turn around to see Ash standing beside his Noivern, "Hey fellas, think I can join in?" he asked cheekily.

"Uh, the World Monarch?!" The guard paled, "We should call for backup-"

The guard tried to reach for his Rotom Phone, only for a shadow-like claw to swipe it away. The guards turn to see Team Rocket and Silver standing beside Ash, Jessie's Mimikyu scaring them further.

Each trainer sends out a Pokemon to attack the guards as the guards send out their own Pokemon. Alarms ring throughout the bulding, drawing more guards towards the area. Ash suddenly gets a call from Dot, he answers without hesitation.

"Hey Dot, are we all clear to head over to you?" Ash asked.

"Not really," Dot answered, "Some of those Explorer Admins found us, think their names are Indy and Rubella?"

"It's Indi and Rubrina!" A voice on the call exclaimed.

"Indy and Indi are the same thing!" Dot shouted back, "Yeah, Liko's fighting them right now, but Charcadet's not handing it too well."

Dot ended the call as Amethio tapped Ash on the shoulder, "I don't mean to alarm you, but more of those Team Rocket people are showing up."

Ash looked up, sure enough, there were many helicopters circling the area with a red "R" labeled on them, grunts opened the doors and dropped down, sending out their Pokemon. Ash sighed, "I have to go, Liko and Dot are in trouble. Some Explorer admins found them."