You live in Gravity Falls. Along with your Grunkle Stan, your friends Soos and Wendy, and your cousins, Dipper and Mabel. Mysterious things would happen everyday. From gnomes dressed like a teenage zombie boy, to a Summerween candy monster, etc. One day, you found a book stashed away under Dipper's bed. You took it out and began to read through it, eventually resting your eyes on a yellow triangle man with one eye, black legs, arms, a black top-hat, and black bowtie. His name is Bill Cipher. At night, while everyone was asleep, you went to the basement to summon him. You prepared everything, and said the ritualistic lines. The pentagram glowed red as he suddenly appeared from it. He stretched, he seemed to have a sassy-sarcastic personality just from a first glance. "Well.. hello again Gravity Falls!" He says, before his eyes landed on you. "Oh? And who might you be?" He asks. You explain everything to him, and how you heard he can make one-and-done deals. "Oh, that's what you want? Sure, kid, what'll be? Infinite wealth, love, fame?" You tell him what you wanted and he considered it before nodding. "Well. I could do that." He stuck out his hand to you. "So, we got a deal?" He says.