Finn, Jake, and Huntress Wizard were busy at work one afternoon packing up Jake's things as this day was the day he was going to move in with Lady rainicorn and Huntress Wizard was the move in with Finn. Finn and Jake were dividing their things.

"I'll take some of the of dinner plates and some of our movie collection if that's ok with you." Jake said.

"That sounds good to me man." Finn replied.

"I don't have a ton of stuff so it should all fit in here nicely." Huntress Wizard informed them.

"I can't believe you're leaving Jake." BMO said while tearing up.

"Don't be sad BMO. You can stay at either of our places anytime you want." Jake said and Finn assured.

Just as they finished assuring BMO Princess Bubblegum, Marceline and Peppermint butler busted in the room.

"We got a hot new lead on the vampire situation!" Princess Bubblegum exclaimed.

"There's no time to loose. We'll catch you guys up on the way." Marceline said.

They gathered the necessary supplies and set off. Peppermint Butler led the way.

"So where are we going, What are we doing?" Huntress Wizard asked as she followed the group.

"I got a mysterious letter in the mail a few hours ago from a member of the secret group that seeks to unleash hordes of vampires unto Ooo. The writer said she was fed up with the group and wanted a way out, So she contacted us. We're gonna meet in an old abandoned fortress in the middle of the forest." Princess Bubblegum explained.

"This sounds hella sketchy. How can we be sure we aren't walking into an ambush?" Finn asked.

"We can't. That's why we need to be prepared for a fight." Marceline explained.

As they approached the the abandoned fortress they each took their own positions. Huntress Wizard sat perched atop a tree branch. with her bow drawn. Peppermint Butler kept his distance to in order to use ranged magic spells. Finn and Jake approached one side of the crumbling fortress while PB and Marceline approached the other. When they turned the corner they all noticed a masked figure about Jake's height and size sitting on a dilapidated pile of stone bricks. She was also wearing a silky robe to cover her skin.

"So, why did you send us the letter?" Finn asked.

"Was I not clear enough in my letter? I want a way out." The masked figures mask doubled as a voice changer.

"But why us?" Jake asked.

"Believe it or not you guys have great reputations as hero's and adventurers and that's just what I need right now." The figure explained as she hopped off the stone bricks.

Unfortunately for her as she did this she tripped and fell on an old pile of rubble. The fall removed her Face mask revealing the culprit to be none other than Jake's own daughter Charlie.

"Uh oh." Charlie said as she realized what had happened.

"CHARLIE?! JUST WHAT IN THE HECK IS GOING ON HERE?!" Jake yelled.

"Uhhhh... Please let me explain." Charlie begged.

"Well, go on, We're listening." Finn replied.

"Well, I guess it began several months ago. I was perusing a magic shop in Wizard City. I needed some ground up bone powder for something I was cooking up. There was a wood mage there. We began talking and well, one thing led to another and before I knew it I was in to deep to leave, and now here we are." Charlie explained.

"So what is this group you joined called? What do they aim to do?" Marceline asked.

"They call themselves the order of the shadows. There is around thirty members give or take a few. Their plan is to turn themselves all into vampires then hunt down every last human in Ooo. That's first on their list. Then they want to grow their vampire army and rule Ooo through fear." Charlie explained.

"Um hello? Your uncle Finn is one of those!" Finn yelled.

"I didn't join them Because of that Finn. I don't have many friends and they seemed nice at first. They didn't start to turn all weird and radical until it was to late for me to leave." Charlie tried to explain to Finn.

"So, How far have they gotten in their plan so far?" Princess Bubblegum asked.

"The mass transfusion ritual happened last night. Every member of the order of shadows is now a vampire except me. I was able to trick them into thinking I turned as well. They intercepted a satellite transmission and believe there is a settlement of humans living on an island in the ocean." Charlie explained.

"Uh oh. Are you talking about where I think you are?" Jake asked charlie.

"It sure sounds like it." Finn somberly replied.

"Founders island." Finn and Jake said in unison.

"We need to go and warn my mom asap." Finn pleaded.

"The guardian should keep them at bay for a while. Should buy us some much needed time." Jake said.

"I'm so sorry guys. I don't even know what to say." Charlie apologizes.

Finn sighed. "It's not your fault. You did the right thing coming to us." He said. "But right now we've got some vampire butt to kick!"

"Thanks uncle Finn. You're the best." Charlie said as she gave Finn a hug.

Charlie joined the group as they made there way to a port in the Breakfast Kingdom. They gathered some supply's before they set sail. The main thing they lacked was a boat and since they lacked the money to get one they had to improvised. Jake hoped in the water and transformed into a sail boat. The rest of the gang hopped on and set sail. Once or board they began sorting through the gear they'd just bought. Marceline handed everyone a wooden steak and a hammer.

"Just be careful not to hit me with these ok?" Marceline Joked.

Princess Bubblegum began knitting everyone animal hats similar to Finn's in order to protect them from bites with yarn she'd bought. She knit Huntress Wizard a deer hat, Peppermint butler a wolf hat, Jake a horse hat, Charlie a black bear hat, and herself an eagle hat. Marceline didn't need one as she was already a vampire. Peppermint butler delved deeper in his research to see with spells would effect vampires and which wouldn't Charlie made snacks for everyone. Finn climbed to the top of the sail on the Jake boat and strapped a make shift satellite dish to it he connected it to an old phone. He was trying to get a in touch with his mom in order to warn her but they were still too far away. Finn kept trying on and off again for eight hours before he finally got an answer.

"Hello?" Minerva answered.

"Mom! It's me Finn. Is everything ok on Founders Island?" Finn asked.

"Finn! What a lovely surprise. Yes everything is fine here, the guardian is acting a bit strange though. Why do you ask?" Minerva asked her son.

"The guardian probably senses the Vampires coming." Finn proceeded to inform his mother of the situation.

"Oh my. What a nightmare. I'll make sure to start preparing as best I can. Thank you and your friends for coming to help. See you soon." Minerva hung up the phone so she could get to work.

The group was only about five hours away from founders island. Everyone on board was a little nervous, but they knew what they had to do.

"Hey Jake my man. Are you still as scared of vampires as you used to be?" Finn asked.

"Pffft. NO. I conquered that fear years ago." Jake shrugged him off.

"I guess we'll see about that soon." Finn joked.

It was finally time. They could see Founders island in the distance.

"Remember guys. Don't kill any humans who got turned into vampires. They are innocent and can be cured" Finn said.

As they quickly approached the shore they could see dozens of beings swarming around in the air and attacking the guardian. They where vampires. To their disadvantage the sun was starting to set as they reached the shore. Everyone dawned there hats and readied their weapons. It was show time. Upon hitting the shore Jake transformed back into his normal self and prepared for action. The crew were being dive bombed on the beach by vampires. Once manged to catch Jake off guard and pinned him to the ground. The vampire leaned in for the kill when Finn drove a stake into it just in the nick of time.

"Oh... Oh my glob. What just happened." Jake said hyperventilating.

Finn helped Jake back on his feet and the two began running back up with beach. Peppermint Butler was able to defeat a couple vampires using a dark magic missile spell. Once they made it off the beach They made their way into the heart of the city. They happened upon a house of citizen's help up trying to stay safe. Jake stayed behind with the citizens to protect them while everyone else went on the attack. Minerva bots were everywhere attacking vampires. Some humans that had been bitten by vampires came running at them begging for help, but there was nothing they could do yet. It wasn't safe to help at the moment. Marceline took out a vampire on the side of the road. Huntress Wizard shot a steak using her bow and nailed a vampire right through the heart. Charlie got a couple as they were trying to attack some citizens. Minerva bots where able to keep the vampires away from all important computer systems and the Guardian was able to take out a hefty amount of vampires. The battle of Founders island lasted until morning when there was only a handful of vampires left. The crew along with Minerva bots were sweeping ever building checking for strays. Finn and Jake busted down the door to a bakery and began searching. Unbeknownst to Finn a Vampire was held up in the storage closet. It grabbed Finn's head and slammed him to the floor. It pulled Finn's hat off. Jake dived in to knock it off of Finn but he was too late. The vampire leaned in and bit Finn on the neck. Jake Finished the vampire off right after this.

"No... No no no no. This can't be happening." Jake started to freak out.

Finn began sweating profusely and his skin turn sickly color. The color of his eye's changed to a bright yellow. Fangs sprouted from his gums.

"Uh Jake. Th... This is really happening isn't it?" Finn stuttered. "I'm... I'm turning into a vampire."

"Dude we gotta get you to PB fast. She might be able to help!" Jake yelled.

"No Jake, we help the injured citizens first." Finn demanded.

"But Finn..." Jake said.

"No buts." Finn interrupted.

Finn ran outside the bakery. The morning sun started to burn his skin a little, not terribly though since the vampirism hadn't taken full effect yet. He rushed down the street and helped carry a wounded old man over to a makeshift medical tent the Minerva bots had set up. Jake helped his brother rescue the wounded. After they were sure all the vampires were defeated Finn and Jake radioed to the rest of the crew to meet up in the center of the city.

"Oh man everyone's gonna freak when they see what happened to me." Finn worried aloud.

"Oh they totally will, but they all love you no matter what Finn." Jake assured him.

As they walked towards their destination Finn gained the ability to float. His vampirism was becoming stronger. The others were waiting for them. Huntress Wizard was the first to notice that there was something up.

"F...Finn?!" She stuttered. She ran over to him.

"Oh my Glob sweetie what happened?" She asked as she gave him a hug.

"Uh oh." PB and Marceline said in unison.

"Uncle Finn? Are you alright?" Charlie asked.

"Dang, Finn went and got himself bit by a vamp." Peppermint Butler in an almost impressed tone.

"Hehe Oops." Finn shrugged and said nervously.

"Oh my poor baby." Huntress Wizard said and gave Finn a kiss on the cheek.

"Don't worry Finn, I'm working on a cure right now. It should be ready in a few days." PB assured him.

"Make sure all the islanders who were bitten get it first." Finn demanded.

"Dude, your arms are sizzling right now. Try some of this." Marceline tossed Finn some of her extra strength sun block.

Finn applied it all over. It provided some much needed relief.

Everyone chatted a bit before Charlie, PB, Marceline, and Peppermint Butler got back to work. Meanwhile Finn, Jake, and Huntress Wizard went to visit Finn's mom. They entered her lab.

"What the heck happened to my poor son?" Minerva yelled when she saw Finn.

"Don't worry Mom. I'm fine." Finn told her what had happened.

"I haven't introduced you to this special lady yet. Mom this is Huntress Wizard, my fiance." Finn introduced them.

"So much is happening today. First all the vampire shenanigans and now my little boy is getting married?" Minerva started to tear up. "I'm so proud of you Finn."

Finn and his friends stayed on the island for a few more weeks to help rebuild and cure everyone of there vampirism. Finn Introduced his mom to everyone.

"So this is Princess Bubblegum. It's no nice to finally get to meet you. And you must be Marceline. I thought all vampires were evil but I see I was wrong." Minerva admitted.

She loved each and every one of his friends. When the time came to leave one last thing had to be done before they could set sail.

"Ok Finn, It's time to cure you." PB said.

"Actually Peeb's. I think i'm gonna rock this vampire bod for a bit. See what life's like as a vampire. That is as long as you don't care." Finn said looking at Huntress Wizard.

"I'll always love you no matter what Finn." Huntress Wizard said before she kissed him on the lips.

"Well I guess it's settled then." PB said.

"Might be nice to get to chill with a cool vampire for once." Said Marceline.

Jake transformed into a boat and hopped into the ocean. As everyone boarded Minerva said.

"Good bye everyone. Thanks for helping out the island. Come back and see me sometime."

With the Vampires defeated the group headed back home. It took them about a week to make it back home. Once home they had some unfinished business to attend to. Finn, Jake and Huntress Wizard Finished Moving Jake out and Huntress Wizard in to the tree house. It took everyone some time to get used to Finn's new vampire body but everyone adapted to to eventually.