Into The Nightosphere

Cake and Fionna were hanging around the house after beating the plop out of a three-headed slime beast. Fionna planned on going over to the candy kingdom after the fight but she was covered in slime now and defiantly had a stank.
"Cake, how the hay hay am I going to get this junk off! It's in my hair, backpack, and my hat, my hat, Cake!!!"
"Calm down, we can go find a river or something, girl. Stop being a spaz."
So the girls set off into the woods. Up high on Cake's back Fionna finally spotted a secluded spot for them to do their stuff. "There Cake, over by those little mountains and… holy shmowzow! There's a waterfall, too!"
"Mmm… mmm…good eye there, baby." Cake said shrinking down to normal size. She washed herself off quickly and then made wall out of her body so Fionna could have total privacy.
Fionna happily jumped and slashed in the water getting all the slime out of her backpack and clothes. Reluctantly, Fionna lifted her bunny hat off, spilling lengths of golden blonde hair.

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Marshall Lee was bored as usual; he might live in a pastel-colored world but he didn't see eye-to-eye with most of the strange residents that lived here along with him. Today, though was different he didn't feel like himself at all… he felt sick. He floated over to the phone and punched in a few numbers.
"Yo, sup?" Fionna said. Marshall could hear something thundering in the background. 'Where the plumb is she at?' he wondered.
"Um, what the lump are you doing?" he asked.
"Takin' a shower in a waterfall, me and Cake just had a lumpin' awesome adventure!" He could hear more rustling and Cake was talking now, too.
"You done yet? Girl, we still have to go visit Gumball before we go home!"
"Well, *cough* *cough* if you are to busy with BubbleButt then forget I called…" Marsh was about to hang up when Fionna answered.
"Mar Mar, do you feel ok because you sound terrible." Fionna didn't know if vampires could get sick but then again she didn't know much about them really.
"*Cough*Cough* Fi, I have to go, ugh…" The dial tone sounded and Fionna shoved the phone back into her green pack. She let Cake help her get all of her hair up into her hat before telling her they would have to miss the trip to Prince Gumball.
"Why! We go have tea there almost every day!" Cake, of course, only came to the kingdom to visit Lord M. and to make sure Fionna got private time with the prince.
"Cake, Marshall called me. I think he might be sick 'cuz he was coughing in the phone and junk, so I think we need to check him out first. Besides I thought you said you wasn't scared of him anymore."
"Fine…"

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When Fionna and Cake arrived at the cave where the vampire dude lived, they walked up and looked in the window. Inside Marshall was lying down on the couch, not floating, actually laying down. Fionna walked into the room with Cake hiding behind her, "Bro, you sounded bad on the phone but you look plumb awful in person!" Fionna told him trying to lighten the mood.
"Ugh, *Cough* I see Gumball didn't get his daily visit with Bunny did he?" When he saw her face he laughed quietly to himself, it came out sounding like a few harsh rasps.
Fionna was embarrassed; if Marshall Lee wasn't sick she would go and punch him in the arm. It's not like she obsessed over Gumball, too much at least…
"Do you want our help or not? And…"
"Why aren't you floating around?" Cake cut in. She had some trust issues when it came to Lee.
"Well," he began, "It kinda all started this morning. I was floating really low to the ground and I couldn't make myself *cough* go any higher. Then, the coughing started. I think my powers are fading, too."
"Do you have medicine or something?" Fionna asked.
"No, *cough* I didn't think I'd ever need any," Marshall said angrily. "But I know where to get some…But it's too dangerous! *Cough* Cough* I'd never let you go in there."
"O.K. then if that's the case then I guess we don't need to be here then, hope you get better!" Cake said over her shoulder. She was already heading for the door.
"No, we have to help him!" Fionna whispered into her sister's ear. Fionna's fought off zombies, bandits, and a load of other freakin scary creatures. She can fight anything. And that's exactly what she told Marshall Lee.
"Fionna, vampires need vampire medicine and *cough* do you know where vampires live, other than me?" He asked with a raised eyebrow. She didn't know, but after thinking a moment she remembered his mom came out from a place called…
"Oh! The nightosphere?" She guessed sitting herself down on the carpet.
"Exactly, and no way am I going to put a mortal in there to go get *cough *cough* crap for me," Marshall said, sending him into a fit of more coughing.
"Whatever, if you don't open the portal then I will! I remember how." Fionna smiled confidently. Marshall Lee studied her, the way she took on life was so different from him. He heard gossip and rumors about her coming from candy people and other freaks. Sometimes, he knew she heard it too but, she still used everyday to really live life. Being immortal, he hadn't done this for some time. He could do whatever he wanted and he could procrastinate for as long as wanted, too, all because of those two little marks on his neck.
"Fine," He decided angrily, "you two go into my attic and find something dark to wear, like um… something a girl version of me would wear. I have a crazy idea." It was stupid and crazy but he could feel his powers slipping away quickly and he didn't know for sure but, possibly he could die (for good.)
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