A green portal appears in fionna's house one day. Of course her instinct is to explore it, and explore it she does. But as she teleports to Finns world, along with some of her friend, she doesn't realize that both world are in great danger. A great power is unleashed upon them, and only Finn and Fionna can save the worlds before the collide and kill all. Fionna the vampire, and Finn the werewolf must save everyone before its too late...... But Finn and Fionna have to choose, their worlds, or each other! Hmm weird.......... o3o 《 COMPLETED 》

This is an adventure time fan fic Lol

she forgot him then she saved him an protected him an she fell in LOVE once again...

Read till end, really crazy :) Don't read if 13 and Under. Written by Ryry

Princess Bubblegum has been invited to a royal ball party at the Land Of Aaa by Prince Gumball. Bubblegum had decided to bring Finn, Jake, Lumpy Space Princess and Marceline to join her. Something crazy is bound to happen.

Finn has been depressed ever since the breakup with Flame Princess. Finn goes on an adventure to clear his mind. He then bumps into Marceline. Will he realize that Marceline was the one for him? Will he realize that he's been fighting for the wrong girl? (( AN:// I do not own Adventure Time or Characters ))

An Adventure Time Fan Fiction. Tafie and Maximum (Max) have finally got to The Land Of Ooo. Tafie is here to find her Aunt Bubblegum while Max is here to re live his childhood with Marcline. This duo is in for the time of their life's teaming up with the other adventurer set to save princesses, chill with friends, and open hearts up.

Finn,Jakes and everyone else in Ooos origin!

Marceline the vampire queen is on an adventure with Finn and Jake. They find the Ice king to no good but he's by a portal? where does it lead up to? why was he there?? read the book to fond out!!