Len Town

The gang was walking through a forest when Ash noticed a sign. 
"Hey look." He said. "This sign says 'beware of ghost Pokemon and use a psychic type for your protection'. Well that's handy because I've got Girafarig with me."
"I'm glad you do Ash." Misty replied. "I don't want a lot of ghost type Pokemon surrounding me."
Ash released Girafarig from her Poke Ball.
"Okay Girafarig." He said. "There are ghost type Pokemon in this forest, so we need you to help fight them off okay?" 
Girafarig mewed to say she understood Ash's request.
Suddenly some bushes started to rustle.
"What's that?" Misty asked, worried. "I hope it's not a ghost type Pokemon."
Ash slowly crept forward to see what it was, when a brown head suddenly shot up surprising the gang.
"Hang on a second." Ash said. "That's a Girafarig tail."
"That's correct." A girl with purple hair chuckled. "My name is Cherry and that Girafarig in the bushes is mine."
Cherry's Girafarig came out of the bushes. The gang introduced themselves to Cherry. Cherry then noticed Ash's Girafarig. 
"I like your Girafarig Ash." She said. "Do you have any other psychic type Pokemon?" 
"Yes I have a Espeon as well." Ash said. 
"Wow Ash." Cherry said. "I wish to have an Espeon in the future."
"I take it you love psychic type Pokemon, right Cherry?" Misty asked.
"Yes." Cherry said. "Actually everyone in Len Town where I live loves psychic type Pokemon."
Brock looked at Len Town in his map book.
"Ah it says here that in Len Town everyone keeps a psychic type Pokemon." He said.
"That's right." Cherry nodded. "It's also a tradition for everyone in Len Town to have a psychic type Pokemon. Ghost type Pokemon have lived in these woods for hundreds of years, so we raise psychic type Pokemon so that the ghost type Pokemon wouldn't cause any trouble."
Ash nodded in understanding; he had encountered ghost type Pokemon before and they had caused problems for him. His Gengar and Misdreavus were pranksters.
Cherry joined the gang for lunch in the woods. 
"Are you a trainer yet Cherry?" Ash asked.
"Well I am a trainer." Cherry stated. "But I'm not traveling on a journey yet. You see my dream is to win the Johto League and become a psychic type Pokemon trainer."
"Do you intend to only capture psychic type Pokemon?" Misty asked.
"Yes I do." Cherry said. "The truth is, I like psychic type Pokemon."
Ash chuckled; Cherry was a bit like Misty but with psychic type Pokemon instead of water type Pokemon.
"Before I start my Pokemon journey." Cherry said. "I want to train as much as I can. And they say that a psychic type Pokemon and it's trainer can communicate their thoughts and feelings psychically."
"I know what you mean." Ash replied. "Sabrina, the Saffron City gym leader does that and so can I, because I am a psychic."
He demonstrated his psychic power to her by making some leaves fly around in the air and Cherry was amazed.
"Wow Ash that's amazing." She said. "Hey you should come to my town."
The gang agreed with her and Cherry led them to Len Town.
What they didn't know was that Team Rocket had been listening to the conversation.
"A town full of psychic type Pokemon sounds marvelous." James said.
"You're right." Jessie said. "If we grab all of the psychic type Pokemon, they will be great help to Team Rocket."
"But how should we take them?" Meowth asked. "I mean psychic type Pokemon are tricky and we don't have any bug, ghost or dark type Pokemon."
"Not to worry." Jessie smirked. "I have an idea."
Cherry had brought Ash and the others to Len Town. The gang was amazed with what they saw in Len Town; there were psychic type Pokemon everywhere. There was an Abra and it's evolved forms Kadabra and Alakazam, Drowzee, Hypno and Mr. Mime. They were also Pokemon that were part psychic type; like Exeggcute and Exeggutor who were grass/psychic type and a Slowpoke, a water/psychic type. 
"Wow." Ash said. "I've never seen this many psychic type Pokemon in one place."
"You certainly weren't kidding when you said that everyone here has a psychic type Pokemon Cherry." Brock said.
"That's right." Cherry said. "And this way ghost type Pokemon won't cause any trouble."
Suddenly a man ran through the village calling for help. 
"What's going on, sir?" Cherry asked the man.
"I was fishing with my Mr. Mime." The man said. "And then this giant Gengar appeared. I had my Mr. Mime attack it with Psywave, but the Gengar reflected the attack back at us and then it used it's long tongue to trap Mr. Mime inside itself. So I have now lost my Mr. Mime."
"That doesn't seem right." Brock said. "I mean, how could a Gengar become that big?"
"Yeah and ghost type Pokemon aren't able to use Mirror Coat or Counter to reflect attacks." Ash said. "We need to see this Gengar for ourselves."
Just then a woman came up and said that her Abra was taken by the giant Gengar.
"We did attack it." She said. "But psychic attacks are useless against that giant Gengar."
The woman was right; a giant Gengar came into the village.
"Look at that!" Brock exclaimed.
Everyone in Len Town with their psychic Pokemon hid from the giant Gengar except for Cherry and the gang.
"Giant Gengar or not, we can't let that thing get away with kidnapping Pokemon." Cherry said.
"You're right." Ash agreed. 
He then inspected the giant Gengar and his eyes became slanted.
"What's wrong Ash?" Misty asked.
"That's not a real Gengar." He answered. "It's a fake. Because Gengar only grow in size when they Gigantamax."
Cherry, Tomo, Misty and Brock gasped.
"Gigantamax?" Misty asked. She had never heard of that before.
"It's a special transformation unique to the Galar Region." Ash answered.
Suddenly laughter was heard from the giant Gengar; Team Rocket introduced themselves.
"What are you three planning now?" Ash demanded.
"If you must know twerp." James said. "We wish to capture every psychic type Pokemon in this town." 
"That's right." Jessie added. "They will be useful in helping Team Rocket take over the world."
Cherry became angry after hearing what Team Rocket's plan was.
"Thanks to our Gengar and it's glass mirror eyes, catching the psychic type Pokemon will be a piece of cake." Meowth said.
"I get it." Brock said. "The psychic type Pokemon's attacks bounced off because of the mirrors in Gengar's eyes. That's a clever idea after all mirrors reflect."
"Brock, who's side are you on?" Misty asked.
She wasn't happy that Brock was praising the bad guys.
"If they think this plan is going to work, they've got another thing coming." Ash said. "Espeon, Girafarig let's do this."
"I'll help too." Cherry said. "Girafarig, Future Sight."
Girafarig started to turn light blue. Ash smiled; he knew exactly what Future Sight was. It was a psychic type move that did damage to the opponent a few turns later, like a surprise attack. Espeon stood still for a moment and then the gem on her forehead glowed.
"I understand." Ash said.
Since Ash could communicate with his Espeon and Girafarig psychically, he could also tell what they were predicting.
"Okay since Team Rocket are about to use Lick, watch out for it's tongue Espeon, Girafarig."
When Team Rocket released the Gengar's tongue, Espeon and Girafarig were able to dodge the tongue easily.
"No way!" James exclaimed. "That twerp actually knew that we were coming with our Gengar's tongue."
They tried the tongue again, but the Pokemon kept dodging it. Cherry used her Girafarig to raise Espeon into the air with Confusion.
"Now then." Ash ignited his body. 
"Fire Dragon Sword Horn!" He propelled himself up into the air and ripped a hole in the giant Gengar, freeing Mr. Mime and Abra. 
He was just about to issue a order to attack but he didn't have to; Girafarig's Future Sight attack kicked in and sent Team Rocket blasting off.
Everyone was relieved when Team Rocket and the giant Gengar was gone. 
"Thank you Ash." Cherry said. "You and your Pokemon were great."
"You and your Girafarig were great too Cherry." Ash replied. "Especially Girafarig's Future Sight."
"Thank you Ash." Cherry said. "And I actually felt that Girafarig and I were connecting psychically."
"Good for you Cherry." Ash said. "And I know that you will make a great psychic type Pokemon master."
Cherry smiled at Ash's words.
Ash and the others said goodbye to Cherry and then left Len Town to continue traveling.