Chapter 1

The Pines were working their jobs at the Mystery shack. Mabel was upstairs playing cards with her pet pig, Waddles. She soon heard a strange rumbling in the attic. She ran downstairs to find Dipper.

Mabel: Dipper. I heard something in the attic.

Dipper: Mabel. I don't have time for your games right now.

He heard the rumbling in the attic.

Dipper: What was that?

The two of them walked up to the darkened attic.

Mabel: Didn't this place use to have lights?

They heard a hissing noise.

Dipper: Over there.

Dipper pulled out a flashlight and shined it towards the sound. Something slowly rose up. It was eight feet tall with an elongated domed skull, and a lack of eyes. It had a skeletal human body, four fingered hands, four tubes protruding from its shoulders, and dinosaur like legs. It also had a long spinal tail with a sharpened end. It walked over to the two kids. They were paralyzed with fear. The monster's tail slowly brushed up Dipper's leg. It slowly moved its lips to reveal a row of human teeth, and the mouth opened to reveal an inner pharyngeal jaw. The smaller jaw slowly opened up, aiming to the center of Dipper's forehead. Suddenly, it was blown back by a shotgun. Their great uncle Stan had shot the creature with one of the 10 guns he owned. The creature's yellow-green blood began to melt into the floor, being composed of acid.

Stan: You kids ok?

Mabel: Yeah. Dipper?

Dipper: That creature. I feel like I've seen it before.

Soos, the shack's custodian, soon ran up.

Soos: Mr. Pines! There's something melting through the ceiling down there and into the floor. And it scared off all of our customers.

In their room, Dipper was looking through his journal with the number 3 on it.

Dipper: Hey Mabel. Look at this.

Mabel looked over at the book.

Dipper: It's that thing from earlier. I knew I saw this before. It says here, "In my investigations, I had discovered a sentient alien race of incredibly hostile creatures. I called them Xenomorphs, meaning 'strange forms'. These monsters are man's worst nightmare. They capitalize on all of our greatest fears. Fears of the unknown, disease, sexuality, predation, and dehumanization. It has always been an absolute mystery to me as to where these creatures came from. It's still a mystery to me as to what they are. They have feminine bodies, but they have a masculine behavior. They could be male, female, neither or both. Their maneuverability is unmatched, able to cling to any surface and sprint incredible distances in quick bursts of speed. They have no eyes, and therefore rely on their senses of smell and touch. Their methods of reproduction are extremely shocking. First, a single egg hatches spider creatures called, 'Facehuggers.' They attach to the hosts face and insert an embryo in their body for a certain period of time. The creature soon detaches and dies, but the embryo grows into a baby which violently erupts from the rib cage, killing the host. Afterwards, the baby grows to an adult in a matter of hours, gaining the physical properties of the host."

Mabel: Ok then. That's disgusting.

Dipper: It is. If the eggs spawn the Facehuggers, and the Facehuggers spawn the Xenomorphs, then what spawns the eggs?

Mabel: It's another mystery.

Dipper: One that puts all of Gravity falls in danger.