Woo first fanfiction! I thought it might be a good idea to write this as my first story, as it just popped into my mind one day. I hope you enjoy this story. Please review it with constructive criticism. Please don't hold back on any ways I could improve my story or writing style. (Please do note that I do not own Adventure Time, and it belongs to Cartoon Network studios and Frederator.)
It was a bright and sunny morning in the land of Ooo. The birds were chirping and everyone was having a nice, well deserved sleep-in, probably due to Princess Bubblegum's Candy Kingdom Cleanup day, where all of the candy citizens (and Finn and Jake included) all picked up litter and disposed of it into a giant machine that (partially) powered the Candy Kingdom's electricity. It took about twelve hours to pick up every single scrap.
Finn's eyes slowly opened to the sight of the treehouse's ceiling. He turned his head and saw Jake sleeping in his drawer with a blanket draped over him. He rolled over and off the bed, landing face-first. Finn then climbed out of his sleeping bag and went downstairs.
Sometime later, Jake climbed down the ladder into the kitchen. "Hey Finn," Jake said, yawning "What's for breakfast?"
"I don't know," Finn replied "Maybe BMO might know. Hey, BMO!" The little green robot tumbled down the ladder. "Hello Finn. Hello Jake. Are you having a nice morning?" BMO said in its robotic voice.
"Noting much," Jake said "Hey BMO, do you know what's for breakfast?" The little robot shrugged. "I do not know. Do we have any ingredients?" In response to this, Jake stretched over to the cupboard and opened it.
"Nope, Nothing whatsoever. We should go out and get some stuff later." He said. Suddenly, the treehouse shook and everything fell to the ground. "What's going on?" Finn shouted. BMO ran to the window. "It looks like a man in a strange robe is removing a large chunk of our yard." It said.
"WHAT?" Finn and Jake shouted in unison. They ran over to the window and saw indeed a man in a brown robe was telepathically levitating a chunk of their front yard. The strange person then walked away with it. "Hey, get back here!" Finn shouted "That's our chunk our dirt and it stays that way!"
Finn jumped out of the window fully dressed in his blue top, pants, green backpack and bear hat. Jake followed, stretching beneath Finn and catching him. They strode on after the mysterious person.
Finn jumped off of Jake's back and started running. "Jake," he said "stretch around our chunk of dirt and bring it back to the treehouse." Jake began to stretch towards the man. The yellow dog's typical rubber-stretching noise may have been a giveaway, because the man turned around. Neither Finn nor Jake saw any form of face whatsoever, just darkness underneath that hood. Suddenly, the blackness was pierced by two glowing green dots.
The man raised his other arm and clenched his fist. A chunk of stone was ripped out of the ground. He then flicked his wrist. The rock sailed through the air towards Jake, hitting him squarely in the stomach.
"JAKE!" Finn yelled as he saw his buddy bend over himself. Suddenly, Jake straightened up, yelling "BOOHYAH!" and flung the rock back towards the man. The man spread the fingers on his clenched first.
The rock exploded into a shower of pebbles, raining down on Finn and Jake's heads. "Ow." Jake said as a pebble landed on his head. Then the rest fell from the sky. "Ow, ow, ow, ow, ow, ow, ow, ow, ow."
"We seem to be facing a formidable foe," Finn said. "That guy seems to be controlling the ground with his hands."
"And mind." Jake added. "Oop. Incoming." He stretched across another boulder hurtling their way, this time placing it gently on the ground. It exploded anyway.