"Mabel what have you done now" Dipper muttered to himself. He was standing next to a tree. But this was no ordinary tree. When Dipper and his sister had entered the forest monster hunting they didn't know what to expect. Mabel had run ahead after a flash of color she thought was a "fairy", her ever loyal pig Waddles following close behind, while Dipper rolled his eyes. He heard a rustle in some bushes nearby. He approached the bushes cautiously.

"Got you!" He shouted as he ripped open the bushes and found a... skunk. He yelled as the skunk lifted its tail and... nothing happened.
The two wore equal expressions of surprise. The skunk proceeded to scamper of while Dipper breathed a sigh of relief.

"That was too close", he said wiping the sweat of his forehead.

"Alright Mabel, time to go!" He yelled. No response from his twin.

"Mabel!?" He yelled again, hearing the fear in his voice. He sprinted to where he saw his sister run too. When he burst through the thick woods a strange site lay before him. Trees lay in a circle, each having a specialized symbol on it. Taking a closer look Dipper noticed that each must represent a holiday. There was an egg, a firecracker, a turkey, a shamrock and a tree, each having a door knob on it.

But one in particular caught his eye for two reasons 1) it was open and 2) Waddles was sitting next to it. This is we're we find our young protagonist at the beginning. He looked at the front of the door. The sight of the image startled him. It was a smiling jack-o-lantern, the nose being the knob,kind of ironic, since they just celebrated Summerween. Why Mabel went to this one made no sense to Dipper, but when he stuck his head inside he felt a cool breeze, telling him it lead Somewhere.

"Mabel If we survive today I'm gonna kill you", he muttered. "Stay here Waddles," he said to the pig. He oinked in response.

"O-okay," he said as he looked back into the hole in the tree. He took a deep breath to steel himself, then... he jumped in.