I do not own Doctor Who or Once Upon a Time. Only this story. Enjoy!

Chapter 1: The New Wizard of Oz

"What's that?" Clara asked the Doctor as he walked back into the TARDIS console room holding a piece of paper.

"It's a note." The Doctor said. "It's an important note that I wrote hundreds of years ago."

"What does it say?" Clara asked.

"Well...it's written for us." He said. "It's starts with 'to the Doctor, once you are traveling with Clara Oswald'."

"How did you know we'd travel together all those years ago?" Clara asked.

"I don't know." The Doctor replied. "I don't even remember writing the note, but this is definitely me."

"What does it say?" Clara asked.

"It's says that we, you and me, have to go to the land of Oz and save Rumplestiltskin."

"I don't understand." Clara said. "A past version of you wants us to save Rumplestiltskin? Why would we do that?"

"Here." The Doctor said. "Read it for yourself. A lot has changed since we were last in the Enchanted Forest. The Evil Queen cast a Dark Curse that brought everyone to a town in Maine called Storybrooke."

Clara read the note thoroughly. It talked in detail about the Dark Curse, the Savior Emma Swan, and basically everything that had happened in Storybrooke up to that point. The note was written a few days after Cora was killed by Snow White, who went by the name Mary Margaret in this world. It also talked of how Mr. Gold and Regina were both trying to better for Belle and Henry. Mr. Gold was touched by a Weeping Angel and sent to the land of Oz. The past Doctor didn't want to screw up the timeline by rescuing him. The twelfth Doctor, who had already had numerous counters with the Dark One, should be the one to save him.

"So Oz is real too" Clara said. "I suppose the Wicked Witch must be real then."

"She is." The Doctor said. "I went to Oz once before back when I was traveling with Martha. We fought her and it was this whole ordeal. We left two witches in charge of Oz. The Witch of the North and the Witch of the East."

"What about Glinda?" Clara asked. "She must be real too. Where was she?"

"Gone." The Doctor said. "Zelena banished her to the Enchanted Forest before we got there."

"Zelena?" Clara asked.

"The Wicked Witch." The Doctor said. "She's Cora's eldest daughter."

"That makes her the Evil Queen's sister." Clara said.

"She's not in Oz anymore." The Doctor said. "Regina's curse left the Enchanted Forest mostly empty. When Martha and I last saw Zelena, she was leaving Oz to move into Regina's old castle."

"So we're not saving Rumplestiltskin from anything." Clara said. "We're just bringing him back to Storybrooke."

"Yes Clara. Try to keep up." The Doctor said as he started maneuvering around the TARDIS console. "And away we go."

Emerald City, Oz

The TARDIS materialized in the royal graveyard behind the royal palace as the sun was rising over the city. The Doctor and Clara stepped out and found it odd that they had landed in a graveyard. However, the Doctor recognized the royal palace across the small field of graves and walked towards it. The duo kept walking until the Doctor suddenly stopped in front of two particular head stones.

"What is it?" Clara asked.

"Look whose graves these are." The Doctor said.

Clara read the names on the stones. They read 'The Witch of the North' and 'The Witch of the East'.

"You said you left these two witches in charge of Oz when you left with Martha." Clara said.

"That's right." The Doctor said. "If they are dead, and Zelena and Glinda are in the Enchanted Forest, then who is ruling Oz?"

"Hey!" Two royal guards shouted as they ran towards the Doctor and Clara with spears. "You're trespassing on royal grounds."

"I'll take care of them." Clara said, as she prepared to use her magic powers.

"No." The Doctor said. "Let them capture us. They'll bring us right to whoever's in charge."

"Come with us." The first guard said as he and the other guard threatened to stab the two time travelers with their spears.

The four of them then started to walk out of the graveyard and towards the royal palace.

"Where are you taking us?" The Doctor asked.

"To the Wizard." The guard said. "He will decide your punishment."

"The Wizard of Oz?" Clara asked. "Isn't he just a fraud."

"You are thinking of the original Wizard who was turned into a flying monkey by the Wicked Witch back when she ruled Oz." The other guard said.

"So who's the Wizard of Oz now?" The Doctor asked.

"He goes by the name Rumplestiltskin." The guard replied. "Now move it and prepare yourselves for death. He's never spared any royal trespassers before.