Prologue-
Dex slept peacefully in the dark, quiet room…that is, until her Uncle Stan came crashing in. "Alright, get up," he commanded, "The kids are arriving today and I want this place to look good." After a long night in the lab she really wasn't in the mood for his attitude.
"The bus won't be arriving for a couple more hours," she moaned. He glared and pulled the curtains from the window, filling the room with bright sunlight. Dex hissed and retreated under the covers, her purple eyes glaring at him from the darkness.
"Then it gives you plenty of time to get this place spotless," he smirked as she reluctantly emerged from her protection and sat on the edge of the bed.
"Fine, fine," she yawned.
"You know the drill," he tossed a red cap on her bed, "Wear this to cover…" he motioned to her light grey cat ears which flicked back in annoyance.
"I don't wear hats…" she growled.
"Just this time," he sighed as he began to leave the room.
"Whatever," she rolled her eyes. Stan nodded and hurried out, closing the door behind him.
A few hours later, after having swept the front of the store for the 5th time, Dex heard the rumble of the bus pulling up the driveway. "Hey, Stan they're here!" she shouted across the house. Before she knew it, he had flown down the stairs and was on the front porch waiting. "Boy he sure moves fast for an old guy," she chuckled to herself, straightening the hat as she exited onto the front porch.
The bus rolled up and three brown haired kids hopped off with their luggage. While they were sizing up the creaky shack, Stan greeted them warmly. "Hello and Welcome to the Mystery Shack."
"They're family…not tourists…" Dex thought quietly.
"Hi Grunkle Stan! Hi Aunt Dexti!" The taller girl out of the three exclaimed. Dex was taken aback slightly by her enthusiasm but smile at the pleasant change of company. "I'm Mabel! This is Dipper and our adorable baby sister Hayden!" She couldn't help but smirk at the younger girl blushing so she covered her mouth politely as she yelled at her sister.
"I'm not adorable, or a baby, Mabel!"
The boy approached Dex with Hayden following closely behind, their embarrassment rolling off them like steam. "Anyway... despite Mabel's obviously overdone and insanely humiliating introduction, it's good to meet you Dex."
She smiled in reply, "Likewise, Dippin' Dots," The boy blushed at the nickname.
"Well, now that you're all introduced, how about you kids go get settled in? Starting tomorrow, you're all summer employees here," Stan smiled.
"He says that like it's a good thing," Hayden whispered sarcastically as the trio stepped inside.
"The room is the only one at the very top of the stairs," he shouted after them before turning back towards Dexi, "That went well."
"If you say so," she replied, tossing the red cap towards him and headed off to the tree line.
"Hey, where are you going?" He shouted at her.
"Where do you think?" she quipped back as she tossed the hood on her dress over her head. Little did she know then that the arrival of her cousins meant this was going to be the most exciting, yet one of the longest summer's she has ever had since arriving in Gravity Falls… and quite possibly the last.