Alright! This is my first fanfic! I thought, since I really love Fionna and Cake, that I'd make it based off of the episode where Marceline sings "Just your Problem", since I really wish we'd get to see Marshall do it. So, I've basically taken the script from the episode and rewritten it. Here it is! Or... one chapter of it. It'll probably be, at the most, three chapters. I have to rewatch the episode a few times to get a sense of it. Hope you like!
The summer sun was shining brightly inside of the large, homey treehouse. It was rather quiet, though. The most that could be heard was the small, soft humming of Fionna the human, who stood crouched by their long wooden couch, eyes scanning the seemingly empty room for any sign of her two household companions.
Fionna adjusted her hat absent-mindedly, her bangs falling lazily over her right eye. "Cake? BMO?" She spoke to the empty room, wondering momentarily where the two had gone or if they were still at home, just somewhere where she couldn't see them.
Normally, Fionna would have felt rather bored being home all alone, curious about where her favorite mutated-cat-sister had run off to. But quite often lately, Fionna took her times of privacy to good use, certainly. She had quite an embarrassing secret, one she hoped her two friends would never find out, just so somehow, word wouldn't get to the person said secret was… well, kind of about.
Realizing she was alone, a small smile graced Fionna's face. One of the pointed bunny ears on her hat flopped to the side as she turned, pulling up one of the wooden cushions of the couch to reveal a large, bright, pink wad of bubble gum stuck to the bottom.
She puckered her soft pink lips, grabbing the piece of her beloved gum from the hard surface. The human laid the cushion back down and sat in it's place, smiling down at the wad in her hands, which stuck to her fingers and stretched at her touch.
Not too long ago, she'd asked her favorite Prince Gumball for a wad of his hair to please an old Tree Wizard who had sat himself atop of cake and refused to let her go did Fionna not, somehow, find him "prince hair". Though she had done as she was asked, the Tree Wizard had seen it only as a piece of bubble gum, so she had to search all over Aaa for the rest of the day to please him. At the end of the day, she had to cut off some of her own hair to give to the Tree Wizard, who was shown to be evil in the end.
She'd kept the gum because of her admiration and, maybe even small crush on the prince. Any time she was alone, she spent quality time with the prince's hair and maybe even spoke to it. Naturally, she did it alone because anyone would think she was weird. Especially the prince himself, which was absolutely why nobody could ever know she was doing it. Well, why she wished nobody could ever know. But things don't always go as planned. This was one of those times.
Slowly and silently, Cake and BMO slid from behind the couch, the two of them staring over at Fionna from behind. Both of them smiled slyly at one another, before Cake stretched her arm over to gently tap Fionna's shoulder. "Hey girl, what'chu doin'?"
Fionna's small scream of terror broke the cat and the game into laughter, and Fionna glared at the two, a soft blush on her pale cheeks as she tried in vain to hide the piece of pink sugar that she held so dear. "Dude?!"
Cake stretched from behind the couch to the seat opposite of Fionna, watching the younger girl with an amused smile. "Don't worry girl," Cake comforted, gesturing things with her hands as she spoke. "we won't tell anyone about the 'private time' you spend with your wad of Prince Gumball's hair."
The rosy color on Fionna's cheeks turned to fire, and she turned her face away from Cake and towards BMO, though still didn't meet eye contact. A smile had come across her face, an awkward and embarrassed one. Her cheeks felt hotter than they had in a while, and she gently rubbed her arm with her sticky, gum covered fingers. "You guys knew?" She asked the two, still avoiding meeting their eye. So much for keeping things a secret.
Cake seemed annoyed by such a question, maybe even a little offended. Her gaze became stone cold and firm. "Fionna, we're room mates." She reminded, and stepped from the couch, swaying her tail side-to-side while she gazed down at her younger sister. "Which is why I'm going to share my beloved keepsake with you."
The feline stepped away, slipping her paw under one of the treehouse's many floorboards. She pulled it up to reveal a small, blue blanket underneath, which she held with care, face softening as she rubbed it against her cheek. "Buh, buh, baduh! My old baby blanket!" She declared, treating the old and stained fabric with care despite how beaten down the poor thing looked.
Suddenly, a strange, red door unfolded itself from thin air and appeared in the room. Fionna sat up, eyebrows lifted from curiosity, stepping a bit closer to the strange door. Out of it, popped a large yellow woman, who had a hat with a door on it atop her head. She hummed excitedly, and Fionna blinked at the strange creature. "Who're you?"
The woman simply hummed in response, jumping from the door and landing beside Cake. She punched Cake across the room and swiped the blanket from her hands, causing Fionna to hold her fist up threateningly, growling at the Door Lady. She walked a few steps closer, swiping Fionna's precious wad of gum and BMO's treasured controller, causing the game to shriek in terror, yelling "no!" and reaching out for the electronic.
She threw a key to another part of the room, which caused now a brown door to unfold. Fionna, now determined, ran for the door as Cake grabbed BMO in her arms and hurried after him. On the other side of the door, a young cinnamon ball child from the Candy Kingdom was happily playing with her toy train, until the Door Lady ran by and stole the train from her grasp. Tears began to form in her eyes, and Cake and Fionna ran by side-by side. "I'll get your kid back, toy!" Fionna promised, jumping away as she began to cry, and the Door Lady threw another key in the air, making another door.
"That girl must do crazy squats." Cake mumbled to herself, while the three of them stood on the ground, looking up at the floral door. Cake held tightly to Fionna and BMO, stretching them up into the door. The three were surprised to find themselves in Prince Gumball's castle.
The prince was running after the yellow woman, yelling, "Get back here Door Lady!" The Door Lady yet again made another door, which she jumped through and left the Prince angry behind it. "You ass, ugh!" He said angrily, but turned to look at Fionna and Cake when they made their presence known. "Fionna?" He questioned, but Fionna brushed him off.
"Come on, Gumball!" Fionna said in a rush, already on her way after the door Lady, into Marshall Lee's livingroom. The black haired, handsome vampire was yelling from the other room, angrily trying to hit the Door Lady with his axe guitar. The Door Lady rushed off into another door, leaving it wide open, so when Marshall attempted to go after her, the sun burned his skin and made him scream in pain, kneeling on the floor until his skin had returned back to normal.
He shook his head, eyes squeezed tight while the other four watched him from afar, Gumball feeling a small twinge in his heart from the sight, though he ignored it to run back after the Door Lady again and help Marshall Lee to his feet.
"You okay?!" Fionna asked, concern laced through her tone as she spoke.
"Yeah…" Marshall replied, rubbing his forehead gently with his hand. Fionna now looked twice as determined as before, glancing to the faces of all her comrades.
"It's alright, we'll get her!" She declared, jumping through the door and landing onto the dusty colored ground with a small thump. The Door Lady ran even faster, the four on her trail again. One last time, she threw a larger key which had created a giant, odd looking door. Before anyone could do anything, she'd run through it and the doors shut quickly together, almost crushing Fionna, which caused Cake to hurriedly pull her back. "No!" She said, beating her fists on the dark brown door, looking down in shame. Why couldn't they catch her in time?!
