Latifa, Spark and the group

The siblings looked at Serena and Perisa. They seem determinate of getting the battle started. "Careful. Remember, they are hosts of the Ultra Beasts. 

The Pokemon is very powerful, we can't hurt them physically." Gladion said, as Lillie ask, "So, what can we do to snap them out of it?"

Latifa said, "Spark, you have to use that Z-move you mentioned about. It's the only way to save our loved ones. Vileplume and I can distract them as much we can. Pichu, can I trust you?"

Spark smirked at his little sister's question, as that Pichu said, "Pi!" 

As that Serena and Persia was preoccupied with Latifa, Ash sensed his son's aura . "Spark are you sure you'll be fine?

You never use a Z-move before." 

"Ahh!" Latifa yells as that she and Vileplume was getting hurt by the blasts. "Latifa!" Lillie cried, worried about her adoptive sister. 

"Don't worry, I'm fine." She replied. But Serena yells, "Delphox, use flamethrower!" 

"Pichu, use Thunder now!" Spark commanded, as the little type Pokemon runs from Spark's shoulder and uses his move in nick of time. 

"Way to go!" Ash cheered, as that something happened that none of the group expected to be. 

"Pika...." 

Spark's eyes widen, "Can it be? Nah, it can't be." 

Latifa said, "Pichu's evolving!" 

https://youtu.be/5Fa_XROhNEw

The memories on getting Pichu and the challenging of getting his father back came flooding into his mind, as Pichu evolved into a Pikachu!

"Pikachu!!!" 

"All right, it did evolved! Awesome!" Gladion said, as Spark reached out his Pokegear to check his newly-evolved partner. 

"Pikachu. The small electric type Pokemon. It is known as the Mouse Pokemon. It raises its tail to  raise to monitor their surroundings. Don't yank on its tail or it would bite you." 

"Awesome, Pokemon is so amazing!" Spark declared, putting away his Pokegear. "All right, Pikachu, use quick attack!" 

He did as Ash said, "His movement is more quicker than my Pikachu." 

"Well, I did raise him, remember?" Spark asked, "While you were in Project Chosen, I have to learn all about stragize on every situation. I had battle with a Gym Leader. Clement was the closest rival I ever had." 

"True." Ash blushed. But his focus on Persia and Serena. 

"Pikachu, use Volt Tackle!" He instructs as Persia said, "Not a chance!" She knocked the mouse Pokemon as Ash catches him from the blackout attack. 

Spark glares at the attack, as Pikachu looks at his trainer with a determined expression. 

He looked at the Z ring, as he knew that it was the perfect time to use it. He said, "Ready, bud?"

"Yep, just say the word." He replied. 

https://youtu.be/zK1cUfFSJmw

As the Z-move was being performed, it astonished Ash, it reminded him of that he has so much to learn, about being a trainer, husband, friend, and most of all, a father to his two grown children. 

As both trainer and partner were exhausted from using the Z-move, they rushed over to the Coordinator and trainer. 

"Mom!" Spark said, as he pulls out the both of them from the Ultra Beast's bodies. 

~ With Latifa, Bonnie, Red, and Clement~

"Do you guys see that?" Bonnie asked, as that Red asked, "Did Spark did it? Did he performed the Z-move?"

Latifa knew in her heart that her brother had done it. "We have to catch up with them, c'mon!" 

As the group finally saw the aftermath, Latifa rushed to her family's side. "Mother, please wake up, it's me!" 

Serena woke up as she sees that her entire family was there, calling out her name. "Serena!" 

"Ash, Spark?" She groans as that Ash said, "Take it easy, Ser. The Ultra Beast took a massive damage to you and Persia." 

"I think I remember. We were in Aether Paradise, and those Pokemon came towards us. After that, everything went blank." 

"You can thank Lusamine for that." Bonnie said, crossing her arms, "She took you and Persia to do her insane bidding to take over the world!" 

"Come on, Bonnie, you don't have to be that furious about that." Clement said, trying to ease her. 

Serena took a look at Latifa, as she looks at her eyes as she asked, "Aren't you..." 

"I'm Latfia Ketchum, your daughter. I'm so sorry that I took so long to find you. I didn't mean any harm, I swear. " 

The mother and daughter hugged as Spark shaken his girlfriend, "Wake up, Persia. " 

The girl woken up, as to see her boyfriend as he sigh from relief. "What took you so long, Ketchum?" 

Spark said, "Sorry, sorry! But still I'm relieved you and Mom are back to your real selves. Personally... it frighten me. 

Seeing you both being possessed, it felt like..." 

She took his hand, "I know. None of it was ever easy as it should be. Wait, where are we exactly and who is that girl besides Serena?"

"Boy, you wouldn't believe how much trouble we had to go through just to get here." Bonnie said, as both trainers were confused by her words. 

"Oh, right, we have to let the others know everything went well." Latfia suggested. 

"Way ahead of you." Ash said, pulling out his Pokegear.

Red, Jessie, and Brandon

Red was getting nervous . "Man, I really hope that they'll be fine. I mean I do trust Spark and the others, but it's making me more nervous than going on a journey." 

Brandon looks at the trainer, "C'mon, you're way too worried. Besides, Jessie had been following Ash for almost a decade!" 

Jessie groans of recalling that mento, "You just had to say that, I'm still stunned of that Mekhi managed to do Project Chosen and the fact that I'm physically related to Ash is an understatement." 

As the trainers sigh, Red's Pokegear beeped as the trio was curious who would be calling them . "Who could that be?" Brandon asked. 

To their relief it was Ash and the others! "Ash, thank goodness! How things happened in the Ultra Dimension?" Jessie asked her cousin.

"Easy as pie!" As Spark came through the monitor as he showed his mother and Persia, being escorted with Latifa and her adoptive siblings. 

"Whoa, you guys did it! But where is ..." 

"Lusamine? We don't know, but be on your guard. She might do some things once she leaves Ather Paradise." Spark said in a cautious tone. 

"Don't worry about it, we will get her, she really pushes my buttons. I really want to use my aura on her." Jessie said, feeling more excited of getting revenge for hurting her family. 

Spark was quite nervous about his cousin's approach, "Yeah, cuz, that is a little too extreme. We'll head back to the portal with Nebby. We'll see you all pretty soon." 

As the Pokegear call ended, Red sighs with total ease. "Geez, what a way to end a rescue mission. Although seeing a Pokemon like Nebby, I can't still can't believe that Latifia befriended it." 

 Brandon shrugs, "What you expect from a Ketchum?" He felt complex feelings about being a best friend to Spark and being with his family. 

It wasn't entirely Ash's fault to leave, it was Mekhi's evil deed to make Project Chosen, and Ash felt it was right at the time to do it. 

"Brandon, what's the matter? You seem distantly quiet." Jessie asked, looking over at him. 

He waves, as to reassure her, "Just thinking about something. It's not that important." But then, the whole building begins to shaken so violently! 

"What the heck!" Jessie exclaimed as that the group hold on to something. "What happened?" Brandon asked. 

Jessie uses her aura as to check it out, as she did, it revealed something evil. "I think it's her. Lusamine has done something to Ather Paradise!" 

They went outside to see the entire place was floating in mid air! 

"Great! Can't things get any worse!!!!!!!" Red yelled out.