Shauna is outside training her Pokémon nearby Professor Sycamore's Pokémon Summer Camp. Not only she was a trainer but she's also a Pokémon Performer and is one of Serena's rivals.
"Hope I can become good as Serena one day," Shauna said. "I want to be skilled as her."
But then she was distracted from her training as she looked up into the sky. She wondered what floating up in the sky would be like after watching a flock of Fletchling fly over her.
"I wonder what it's like to float in the sky?" Shauna said. "It's a good thing I secretly kept a tank of Poké Helium at my house."
Shauna went to her house to pick up what she needed really quick. She looked under her bed and found the Poke Helium tank. She left her home in a hurry and returned back to where she was before.
"Alright," Shauna said and put the air hose into her mouth. "Let's get this started!"
Shauna turned on the Poké Helium tank and watched the air flow through into her mouth. The tank began to pump her up causing her to inflate like a balloon. She continued to expand larger as her shorts were about to rip off. The more she got bigger, her shorts eventually gave up and popped off her ballooned body causing her Teddiursa underwear to reveal.
"Hmm... Mmph!" Shauna muffled through the air hose. I feel like a Drifblim! she thought to herself as she couldn't talk.
By the time she was done inflating any bigger, she spat the air hose of her mouth and flew away. This time, she would be able to say what she would think of herself as a blimp.
"Oh no!" cried Shauna as she looked down and saw that her shorts came off. "I hope nobody sees my Teddiursa undies," she added feeling nervous about what her friends would think.
But she brushed off the embarrassed look on her face by turning it into a smile. She spread her arms out and pretended to feel like if she was a Fletchling.
"I could be like the Fletchling whom I saw earlier," giggled Shauna. "Kalos looks way amazing up here when you're floating like a Drifblim.
Shauna flew around Kalos for some time until she wanted to get back down. She took a deep breath and then let out a powerful exhale. She began to fly around in the air rapidly and swooshed around like a balloon's noose being untied. After she lost all of the Poké Helium air from her body, she came to a safe landing onto the ground.
"I had a fun time being up in the sky and all..." Shauna began but then realized she needed to put on a new pair of shorts. "But I must go home and put on a different pair of shorts!"
Shauna scurried on back to her home before anybody else could see her underwear. After she put on a new pair of shorts, she resumed her training to improve her skills as a Pokémon Performer.