Adventure Time with Finn and Jake
The Lord of Shadow.

Chapter 1: The Release
It was a beautiful day in the Land of Oo as Finn and Jake walked towards the Candy Kingdom. Puzzled by their strange and sudden request to meet Princess Bubblegum, Jake turned to his best friend.
"Dude, why are we meeting Princess Bubblegum again?" He asked.
"I'm not really sure," Finn replied "Alls I knows is PB has some special information to share with us. She said it was something that only the bravest heroes of Oo were trusted with knowing."
"Oh…I guess that's pretty cool. Hey do you think it'll be another fate of the world deal, like when we fought the Lich?" Jake asked in excitement.
"Probs! Oh! Maybe it's the location of a magical temple filled with bad guys and mysterious treasure!" Finn exclaimed getting equally excited.
"Oh man! Now I'm getting pumped! Let's get to the Candy Kingdom!" Jake cried and Finn with an energetic "Yeah!" ran behind him.

Finn and Jake ran through the doors of the Candy Castle, Princess Bubblegum was already waiting for them in the main hall.
"Finn, Jake, I'm glad you came. There is a matter of great importance I believe it's time you knew of."
"What's the haps poibles?" Finn said in his confident way.
"I can't tell you here, it'd be best if you followed me." She said seeming more concerned than they had ever seen her.
She took them to what appeared to be an elevator and presented a special key. She turned to them saying "This key was forged by the candy guardians and it will take us to a secret dungeon in the deepest lairs of this castle. There all will be revealed to you."
They stepped into the elevator as Princess Bubblegum inserted the key into its slot on the side panel. The elevator grew dark as they went further down. And when the doors opened, they were in total darkness.
"Hey what's the deal Princess? Where's all the light." Jake asked
"I'm sorry Jake, here put these on, they'll allow you to see in this darkness." She replied and handed Finn and Jake thick horned-rimmed glasses. When they put them on, they could see a large barred cave glowing with a radiant light. Behind it was a boy; he was on his knees and his hands we chained to the floor. His head was down, and he looked like he didn't have the energy to lift it though he seemed aware of their presence.
"Princess, is that?" Finn stepped forward as he spoke, unable to grasp what was in front of him, "is that a…human?"
Princess Bubblegum placed her hand on Finn's shoulder and pulled him back towards her. "No Finn…not anymore. That is Juno, the Lord of Shadow."
"The Lord of Shadow" Finn asked "He doesn't look like a Shadow Lord…kind of just like an ordinary kid…like me…"
"Finn," Bubblegum began in a soft voice "I know you want to see him because he's a human like you, but believe me, Juno is pure evil. Allow me to explain. You see, many years ago Juno arose from the place where the most evil beings reside; The Shadow Abyss. When he emerged in the Land of Ooo, his evil was sensed by the Gumball Guardians and they summoned Billy to destroy him. Juno first approached the Candy Kingdom where Billy challenged him to battle. But Juno was to powerful, even for Billy, but before all hope seemed lost Billy found a way to cut off Juno from his power."
"How'd he do that?" Finn asked.
"By separating him from his sword" Bubblegum replied "after that, Juno's power was reduced greatly enough to imprison him. But Juno was crafty, and had mastery over all shadow. He was able to move through people's shadows as they were cast on the ground. So Billy subdued him a second time, however this time, he was imprisoned here in the purest darkness where he would be unable to maneuver. As a second precaution, we trapped him behind a barrier of light, and did the same for his sword."
"So he's pretty well imprisoned then. Don't see why you'd need us around" Jake said sarcastically, but Princess Bubblegum remained firm.
"The reason I'm telling you all this is because you are the greatest heroes Oo has known since Billy, and should anything happen you must be ready to face this horrible foe. Also, you must ensure that his sword never falls into the wrong hands, and remains behind the barrier at its resting place."
"Where is its resting place?" Finn asked, enraptured by this epic tale.
"At the peak of the Shimmering Mountains" Princess Bubblegum replied.
"Princess, you have my word, I will defend you from this guy and keep his sword away from anyone, who tries to take it." Finn said in his most serious voice.
"Thank you Finn. Now, we really should be going. Come on you two."

As Finn and Jake left the castle, Jake suddenly turned to Finn and cried "Dude! We should totally take that sword!"
"What? You heard the Princess, it needs to stay behind that barrier thingy" Finn replied sternly.
"But think about it man, the Princess doesn't want that sword to fall into the wrong hands right? Whose hands are less wrong than ours? And besides, it'd be another awesomely rad sword to add to our awesome and rad sword collection. And I know how much you like awesome and rad swords."
Finn looked down for a second and said "Yeah…yeah I do."
"So let's go get that sword buddy!" Jake exclaimed.
"Yeah! Alright!" Finn shouted and the two heroes set off to claim the mysterious sword.

Meanwhile, in the depths of the Candy Kingdom, the imprisoned Juno raised his head slightly, his eyes glowing in the darkness.
"It's finally happening" he said quietly, "my freedom is at hand…"