I do not own Doctor Who, Once Upon a Time, or any of the characters.
Chapter 1: The TARDIS Returns
It was a Friday. The sun had just risen over the city of Cardiff for another day of spring in Wales. Rose Tyler sat on a bench alone above the Torchwood base. As people walked passed her, she couldn't help but wonder if she made a mistake leaving the parallel world. She had a good life with her human Doctor. She supposed things only got crazy when Ariel arrived looking for the blue diamond, a powerful and dangerous magical jewel. Peter Pan knew that mermaids had the power to travel between worlds and he sent Ariel to a parallel one to find the diamond. Ariel arrived to a world at war with the Cybermen. Eventually, Rose found the blue diamond and discovered that she had magical abilities. She used the diamond to destroy every Cyberman on the planet and save billions of lives. Rose traveled back to her native universe with Ariel so that she could see the Time Lord Doctor again. After the day that he saved the universe from Davros and the Daleks, he just dropped her back off on the parallel world and flew away without saying goodbye. Ever since, Rose has been wondering about him. She wondered if he was alone or if he regenerated. She longed to have one last conversation with him, so that she could finally find some closure and be able to pursue a true romantic relationship with the human Doctor.
However, it was starting to feel like Rose made the wrong decision. When she and Ariel arrived, Pan took the blue diamond from the mermaid and then unleashed a group of Gorgons to attack Torchwood and steal the red diamond, the blue diamond's twin, that the Evil Queen left there when she visited this planet. Rose had left her human Doctor back on another world alone. Now she sat on a bench taking in the sunlight before she went to work for another day at Torchwood. She'd been in Cardiff for almost a week with no sight of the TARDIS. She hoped the Doctor would come soon. He was in Cardiff just before Rose arrived, now it appears he may not come back. Jack waited over a hundred years before the Doctor came back to Cardiff, but Rose wasn't immortal. It occurred to her that she may die waiting for the Doctor and never see her human Doctor or her family again.
Martha told Rose that the Doctor had in fact regenerated and he had a new, young companion named Clara. They came to Cardiff to help stop the Evil Queen and the monsters that she unleashed from the Cardiff Rift. Regina had also stolen Mickey Smith's heart as leverage against Torchwood to ensure that they would not try to attack her once she cast the Dark Curse and lost all her magic. Even if Rose never saw the Doctor again, there was still the Peter Pan problem. The evil boy from Neverland was in possession of the two most powerful objects in the universe. After he stole the red diamond, he said that he was going to Agrabah, which according to Ariel, was the land of the genies. Rose was about to stand up and go back to Torchwood downstairs, when she suddenly heard a familiar sound. A sort of loud, wheezing noise that she hadn't heard since that day at Bad Wolf Bay. She heard the sound of the TARDIS as it materialized a few yards away.
