The following morning, when misty woke up and looked at the mask as she looked in her bag and saw that everything was back to normal as she walked down the stairs and had her breakfast.
After Misty had finished her breakfast, she walked around the gym and fed her Pokémon as she said,
"Where is everybody?"
"DAISY, VILOET, LILLY, WHERE ARE YOU... Stop folling around," she said as she checked their rooms until she saw a letter on Daisy's bed.
When Misty picked the letter up, she opened the letter and read it as it said,
'Misty, we have gone to Celadon City to do some shopping and not be back till 11 see you soon, love Daisy, Lilly and Violet X' as Misty had an idea as a large grin appeared across her face.
Just then Misty went into her bedroom and took the mask and said,
"It's Showtime," as she pulled the mask onto her face as she transformed back into Misty/Mask.
When Misty/Mask was back in her tight latex clothes she gathered her mask balls and transformed into a female version of Goku the legendary super saiyan from the Dragonball Z world as she zipped through the Gym and placed a sign on the door saying,
'Closed for the near future for major refurbishment sorry for the inconvenience' as she closed the shutters and gave enough food to her sisters Pokémon and closed up.
Just then Misty/Mask used Goku's instant translocation to locate May in the Hoenn region as she was on the road heading towards her next Pokémon contest. When Misty/Mask reappeared she hid in the trees and bushes until she saw nobody was coming as she started to race around in a large circle at super speed like a familiar blue hedgehog as she became nothing but a green blur as a building was finished in seconds as she stopped and went into the shop with a underground cellar like room as she decorated and opened the shop later only a hour later as she put all costumes out on display and a sign in the front window saying,
'Pokémon contest costume Shop Grand Opening, ½ price sale' as Misty/Mask spun herself into a young woman so not to be recognized.
A couple of hours later, May walked into the store and looked around as Misty/Mask disguised as the young woman walked over and said,
"Hello there can I help you?"
"Hello yes I would like some help as I'm looking for a costume for the upcoming Pokémon contest," replied May as she looked at the young woman.
"Well you came to the right place my dear," said the young woman.
"How silly of me, I'm May from Petalburg City so how about that costume," she said.
"I'm Alina," replied Misty/Mask in disguise.
Just then Misty/Mask as Alina said to May,
"So what Pokémon do you use?"
"Well I have a couple but I mostly use my Squirtle so I'll go for that if you have any?" May replied.
"Well I have the perfect outfit for you if you would like to follow me," replied Alina (Misty/Mask) as she led May down to the cellar.
Just then Alina (Misty/Mask) walked over to a mannequin and removed the large white sheet from it and revealed a shiny latex Squirtle costume as May said,
"That's perfect Alina may I try it on for size?"
"Sure May we'll take it back up to the changing rooms and we'll get you changed," Alina replied as the two girls walked up the stairs and entered the changing rooms.
When May was standing in the cubical getting undressed as she stood naked as she removed her bra. Just then May said,
"Ok Alina I'm ready for the costume," as Alina walked into the stall.
When Alina (Misty/Mask) entered the stall she said,
"Here May, I'll help you into it," as she handed it to May.
May gazed at the outfit as she held it up in the light and said,
"This is a cool costume," as she unzipped the zipper on the front of the costume and placed her legs inside the leg slots.
As they slid in to the holes, they made a rubbery sound as the coolness felt nice and cool on her bare legs. A short time later, May proceeded to pulling the suit up her body so that her legs were fully slotted in, and the suit was around her torso and bottom. Just then May looked at herself in the mirror and looked at the suit and realized that the costume had really made her bottom stand out, which was normally hidden most of the time underneath her cycle shorts. While looking at her back she saw the light blue tail stick out from the bottom of the shell that she saw on her back. Next was the arms as it was a struggle for May to do by herself, but with enough wiggles and moving about, she managed to get them in as her hands came through the holes as Alina (Misty/Mask) watched on. Once May had the costume almost on, she moved her hands about a bit and managed to get her breasts to slot in properly. Strangely, there were transparent bits for her nipples to be exposed and visible. The final piece to put was the mask.
Just then Alina (Misty/Mask) handed May the latex Squirtle mask as she took it and placed it down on the bench as Alina handed May a hairnet to put over her hair so that it wouldn't get in the way of the mask. After May had put the hairnet on she took the mask and unzipped it and pulled it over her head and then down over her face.
When May had the mask on over her head and face she said while looking in the mirror,
"Alina does this mask fasten?" she asked as she pulled the mask into place so she could see through the eye holes clearly.
Just then Alina (Misty/Mask) said,
"Yes May, this mask does have a zip would you like me to fasten it for you?"
"Yes please Alina," replied May as she couldn't wait to see herself as the mask still looked a bit rubbery.
Just then Alina (Misty/Mask) pulled the zipper down to the bottom of the mask and said,
"How does that feel now May?"
"A little tight but great," replied May as all of a sudden May watched the zip pull itself up and then simply disappeared as May tried to desperately tried to get out of the costume but she was now trapped within the Squirtle costume as she had a look of shock in her eyes as she said,
"Alina, what's the matter with this costume?"
"Nothing May but you look ok to me and would you allow me to put this around your neck to make the costume complete," replied Alina (Misty/Mask).
"Ok Alina," replied May from behind her Squirtle mask as Alina (Misty/Mask) placed a yellow posture collar around May's neck and fastened it.
After Alina (Misty/Mask) had fastened the posture collar she said,
"There you go May now you look like a real Squirtle," as she transformed back into her masked self.
Just before May could reply her eyes went diluted as she said,
"I serve my mistress Misty/Mask." From behind her mask that was now tight to May's face and fitted her head purfectly as Misty/Mask was happy with the outcome.
When Misty/Mask and May who was now trapped as her own female Squirtle slave she took her outside and said,
"Now my Squirtle, please stand back," as Misty/Mask limbered up and ran at Cheetara's super speed until she became a green blur as she de-built the shop before someone saw them.