I do not own Doctor Who or Once Upon a Time. Only this story. Enjoy!
Chapter 1: The Army Flies
The Doctor, Rose Tyler, Clara Oswald, Captain Hook, Jack Harkness, Martha Jones, Alice, Cyrus, and Tinker Bell were immobilized at the top of Neverland by Peter Pan's magic. They could only move their heads. The evil boy had collected the red and blue diamonds, the two most powerful jewels in the magical world. With their power he cloned a massive army of Daleks. The Doctor and his friends were powerless to stop him and watched in horror at the millions of Daleks floating around in the starry, Neverland sky. A Dalek came to Neverland long ago and Pan saw what it could do. He decided that he wanted the Daleks to help him in his quest for the heart of the truest believer. So after many years, he acquired the two diamonds and tricked a Dalek into coming to Neverland, where he trapped it and used the diamonds to magically create millions of copies of it. Peter Pan now had his own private army of Daleks.
"Please." Clara said. "Don't do this. Billions of people will die."
"I don't care about who dies." Pan said. "I only care about who lives. I want them to kill anyone they have to in search of the boy. They'll go to every planet and every corner of existence until that boy is found. That's one of the perks of using the diamonds. I can make them do anything I want. They obey me and only me."
"How are you planning on doing that?" The Doctor asked. "In case you forgot, the Daleks cannot travel to every corner of the universe. They couldn't even get to Neverland by themselves. They had to go through a magic portal to come here."
"Exactly." Pan said.
Peter Pan held the red and blue diamonds, one in each hand. He raised them up high, closed his eyes, and concentrated. Soon, both diamonds began to glow brightly. When his eyes opened again, they were glowing bright purple. The power of both diamonds was flowing through him. Suddenly, hundreds of swirling, green portals opened up on the waters that surrounded Neverland. The Doctor turned his head to see that the ocean had been transformed into a gateway to hundreds of other worlds. From above, it looked like hundreds of green dots had sprung up on the waters all around the island.
"You've really thought of everything haven't you?" The Doctor said.
"Oh yes." Pan said. "My Daleks will fly into these portals and take them to other worlds in every part of the universe. They'll go to Earth, the Enchanted Forest, Raxacoricofallapatorius, Wonderland, the Ood Sphere, Oz, Agrabah, Arendelle, and even that parallel world of yours, Rose. That's how powerful the diamonds are."
"No!" Rose yelled. She was thinking about her parents, her little brother, and the human Doctor that she left behind. There would be no regenerations for him.
"Peter Pan never fails." Pan said for all to hear before tilting his head upwards to address the millions of Daleks hovering above. "Fly! Fly to every corner of existence and find me that child! Destroy anyone or anything that stands in your way!"
Then, the Daleks scattered across the sky and flew downwards towards the ocean. They filed into the hundreds of portals across the waters, each bringing them to a different world and a different corner of the universe.
"Please stop!" The Doctor yelled. "I can help you. My TARDIS can locate anyone in all of time and space. Stop all this and I'll find whatever child your looking for and take you to him."
"I'm afraid it's too late for that Doctor." Pan said. "Besides, if I did that, then I wouldn't get the satisfaction of watching you all despair knowing that there's nothing you can do to stop me. I've finally gotten my revenge on you. You should've never come to Neverland in the first place."
"Can't you just let that go?" Rose asked.
"What do you think?" Pan asked as he gestured to the millions of Daleks descending into various magic portals. "You should've learned this a long time ago. I always win."