This is my first fanfic ever so I hope y'all like it. So in the book, marceline started getting tired of drinking the color red so she went out into the woods to at least find an animal or two to drink from. Princess bubblegum was up later than usual that same night and she decided to go for a stroll around in the woods. She needed more lab animal's to work with anyway. So she started her walk in the woods. After marceline left her cave, she bit a few animal's that wasn't asleep and found a fond likeness to blood. So after that she found a shadowy figure in the distance and went for it. But what she doesn't know is that that figure she saw was princess bubblegum! To hear the rest,your gonna have to read the book.