I got this idea while watching the trailer for the Christmas Special and after I wrote it down, I may have cried. A lot. And eaten an entire box of Heroes.

Anyway, enjoy! :)

DISCLAIMER: I don't own Doctor Who, though this heart-wrenching little convo is mine...I think. Unless it becomes canon. Well...then they stole it from me. Or if not, just a huge coincidence. I'm going to shut up now.

Clara turned up the collar on her coat as the wind picked up. Her chocolate hair was flying into her eyes and she shivered as a particularly icy gust stabbed into her back. She turned around the corner of a suburban area in London when she found her destination. Running up the drive, she stopped outside the door, checking that it was in fact number 13. She rang the doorbell and stood outside, her teeth chattering.

"Who is it?" she heard from the inside.

"My name is Clara Oswald. Can you please open the door?" Clara asked, tucking her hair behind her ear. The door opened slightly and a boy in his late teens stuck his head around the side.

"Who are you and what do you want?" The boy asked, quite rudely in Clara's opinion.

"I need your help," Clara replied and the boy groaned.

"You're not from UNIT are you?" he asked and she shook her head.

"No, I'm not. I need your help," Clara explained

"I don't do that anymore," he dismissed, shutting the door.

"Luke, please! Luke! LUKE! SARAH-JANE WOULD HAVE WANTED YOU TO HELP!" Clara yelled as she heard the footsteps retreating. The footsteps stopped, and then quickly advanced. The door was yanked open and Clara faced an extremely irate Luke Smith.

"You don't know Sarah-Jane. You may have facts and figures but you don't KNOW her. You don't know what she would have done or have wanted me to do. You don't know my Sarah-Jane," Luke spat, his voice breaking at the end. Clara felt a twinge in her heart as she watched the grieving teenager.

"I'm sorry, I really am. I'm not here from UNIT. I'm here from The Doctor. Please help, Luke," Clara explained softly. Luke calmed down for a moment and then opened the door fully, letting Clara in. She walked into the living room and looked around it. There was a comfy sofa on one corner and a TV opposite. The room was littered with food wrappers and the sofa was worn. On the mantelpiece there were pictures of Luke with Sarah. Clara walked over to one and picked it up to get a better look at it. Luke couldn't have been older than 15 and was beaming happily next to a girl with dark black curly hair and a dark skinned boy. In between them was Sarah, laughing at something the girl had said. Clara smiled at the photo and then placed it gently on the mantelpiece.

"You're right," Luke said and Clara turned around. Luke was standing awkwardly in the middle of the room, his eyes slightly red-rimmed.

"Sorry?" Clara asked

"Mum would have wanted me to help," Luke replied and Clara smiled.

"The Doctor's in trouble. We're getting everyone we can to help," Clara explained and Luke nodded.

"What can we do?" Luke asked, folding his arms.

"As we're told," Clara smirked and Luke shook his head in confusion

"So you don't actually have a plan?" Luke asked, his eyebrows furrowed

"Of course I do. What do you mistake me for?" Clara smiled, holding out her arm. She gestured for him to come over and she placed his hand on the device on her wrist.

"Is that a Vortex Manipulator?" He asked, poking the leather strap.

"Yep," Clara answered, punching in some co-ordinates that she'd fished out from her pocket written on a scrunched up piece of paper.

"Where are we going?"

"Trenzalore," Clara replied and looked at him. His eyes widened as she hit the button and then they were both gone. At 13 Bannerman Road, silence fell.