This is the story of Domiclese, a young shepherd in the time of the ancient Greeks. What does he have to do with modern-day Gravity Falls? Quite a lot.

I don't own Gravity Falls or any of its characters.

Chapter One: The Wrath of Diana

Domiclese the shepherd lived in the ancient Greek region of Arcadia with his twin sister Callisto. Although they were rumored to be the children of King Lycaon, they lived simple lives in a small home near the royal city of Lycosura. Every day, while he tended the sheep in their pasture, his sister took their wool and spun it into thread, then dyed the thread and wove it into garments with colorful designs and patterns, which they sold.

He was a serious young man, constantly alert for dangers to his sheep. Callisto was full of joy and seemed to be always smiling. Her name meant "Most Beautiful," and she truly was, in spite of the slight crookedness of her teeth.

"Bye, brother," she told him one evening. "I'm off to my meeting with the Nymphs of Diana."

The Nymphs were a group of young women who worshiped the goddess Diana and took a vow of perpetual virginity (at least as far as men were concerned).

"Have fun," said Domiclese.

"I always do," said Callisto.

In those days there was no written history, only legends passed down by the poets. One such poet was Homerus, a friend of Domiclese and Callisto.

That evening, Homerus came and said, "Domiclese, you must take care for your sister. I have heard that Zeus is here on the prowl, and she is the most beautiful maiden in this area."

"Zeus has come here? Why do the gods not leave us in peace?" asked Domiclese.

"The gods are made of metal in their true form, but they come among us in human bodies, full of lusts like any mortal man," said Homerus.

"Where did the gods come from?" asked Domiclese.

"No-one knows for certain," said Homerus. "Some say that they came from another world, and that they opened a portal to find this Earth."

"In any case, Callisto is safe," said Domiclese. "She has vowed never to be with a man."

"Zeus will care nothing for her vows, and he is tricky," said Homerus. "He sometimes takes on other bodies to seduce women, such as the form of a swan."

"I don't think my sister would go for a swan," said Domiclese.

But that night Callisto returned home late, flushed and hugging herself with joy.

"I have been honored by the goddess Diana herself," said Callisto.

"What do you mean?" asked Domiclese.

"It's a bit personal, but I can tell you," said Callisto. "Tonight she took me as a lover."

"Wait, wait," said Domiclese. "She's a woman, right? She didn't have the... equipment... of a man?"

"That was the funny thing," said Callisto. "She actually did."

"I think you've been had," said Domiclese.

"I have," said Callisto, grinning.

"Not in a good way," said Domiclese.

Soon it became clear that Callisto was pregnant. She was kicked out of the Nymphs of Diana by her former friends, who didn't believe her about the goddess.

On the day that she gave birth to her son, a beautiful woman came to visit with a troupe of servants and a pet bear in tow. Callisto was holding her newborn and lying in bed.

"Great Diana, I'm so glad to see you again," said Callisto. "Meet your son, Arkas."

"This is no son of mine. You sully my name with your lies," said Diana.

"No!" said Domiclese, realizing something terrible was about to happen. He started forward, but two of the servants grabbed him and held him back.

"But... that night... we..." said Callisto.

"You must be punished for your impudence and your disgrace to the vows of the Nymphs," said Diana.

Diana waved her hand, and her servants unrolled a piece of carpet beside the bed. They led the bear unto the carpet and it shuffled its feet, apparently something it was trained to do. Its fur stood up with static electricity.

Domiclese struggled, enraged that he was powerless to defend his sister if the bear attacked her, but it simply touched her with its nose.

There was a snap of static, and the bear sat back, stunned.

"Why am I out of bed?" said the bear, with the voice of Callisto. "Who is that with my baby?"

The body of Callisto in bed gave an animal groan, dropped the baby on the bed, and raced out of the house on all fours.

Callisto tried to reach for her baby, but when she did she saw her hairy paws. "Noooo!" she moaned.

"You have behaved as a beast, so a beast you shall be!" said Diana.

Domiclese fought, but they were too strong for him and he was knocked unconscious. When he woke up, Diana was gone. So was the bear his sister had become. Only the baby was left alone on the bed, crying.