Follow the song, Donna Temple-Noble. Sigma stood at the crest of the hill, his ball the only light illuminating the area, and all she could make out from the dim light was his figure against the murky sky. She tried to climb the hill, but it was worse than quicksand and every step forward brought her sinking down to her knees in the stuff.

"It's just Donna Noble!" She shouted up at the Ood as she tried to tug her leg out of the stuff, her struggles only seemed to make it worse. "What are you getting at? What song? And why've you brought me bloody here?"

Follow the song. Sigma repeated to her.

"What song?" She threw up her arms exasperated when it seemed she wasn't going to have any luck pulling them out of the ground. "What are you on about?"

We will sing for you, Doctor Donna. He replied cryptically. You must follow. She was about to start shouting at the squid faced alien when she suddenly could hear it, the rise and fall of the Ood's voices, a bittersweet melody that was unfamiliar to her. It tugged at her heart and she could feel it being absorbed into her very core.

"What is it?" She whispered, her hand resting against the ground, just needing to listen to that harmony that surrounded her.

It is the Doctor's song. It ends. But the story continues. You must find it. You must follow the song.

"Ending?" The thought of it was enough to shake her out of her melancholy. "What do you mean it's ending?" She tried to pull her arm back up but found that it too was stuck, slowly sinking along with the lower half of her body. "You get down here right bloody now or I'll make you a right sorry Ood!" Whatever ground beneath her had been holding her steady collapsed and she started to sink at a much faster pace. "Sigma! I've got to help the Doctor!" She cried out in a panic, "What do I do?"

Follow the song, Donna Time Lord. Follow the song. The voice started to fade as she felt herself slipping deeper into the ground, the substance swelling over her shoulders and then her ears, she had time to scream once before it smothered her face and then there was nothing but darkness.

The attempt had been, to say the very least, unsuccessful. Donna opened her eyes with a gasp and found herself staring up at the gray ceiling, sprawled across a pile of old bits of machinery.

Follow the song. Echoed in her mind, as did the voices singing it. She could have only been knocked out a moment, the smell of burnt ozone was still fresh in her nostrils, but it had felt much longer. And it had felt so very real.

"The Doctor's song is ending." She repeated to herself, the statement scared her more than she had been willing to admit, dream or no. What had he gotten mixed up with? Her mind slowly cleared as she realized that she had more immediate problems just then, most importantly, the state of their own dimensional travelling equipment, and the fact that it had just exploded.

"Jack?" She said, suddenly remembering that she had not been alone in their endeavor. "Jack, are you alright?" Her voice felt thick and her ears were still ringing from the explosion, metal groaned distantly and old fires crackled in their death throes, the place was a disaster. "Captain?" She felt herself start to panic in the following silence.

"Well, I'm alive." She heard him groan somewhere to her left. "Always alive." He muttered. She coughed as she rose, trying to clear out her lungs of the stale and burnt air; she made quite a ruckus as she untangled herself from the old alien weaponry she had landed on. She glanced at the teleporter near the center of the room, it didn't look too badly damaged, the glass casing they had surrounded it with was shattered, but the metal frame still held, and the green glowing light in the platform still hummed merrily as though nothing out of the ordinary had happened. It was as if everything had exploded outward, but left that untouched.

The evidence was in the surrounding room, part of the concrete ceiling had cracked and bits of it had crumbled inward, scorch marks stretched out from the radius of the explosion and explained the burning smell of everything. She found Jack's leg moving slowly from behind some filing cabinets and carefully made her way over to investigate. She managed to navigate the rubble by choosing her footing carefully, finally finding some stable ground near the cabinet, which she pushed out of the way with her shoulder and a bit of a struggle.

Jack still lay there, groaning on the floor. Blood had streamed from his nose and mouth, but appeared to have stopped for now, the viscous stuff drying into a crust. Glass shards had torn his skin to ribbons and she wondered if she did not look much the same. His shoulder look twisted in an awkward position, as though he had met the filing cabinet as he had flown past, and they had disagreed on whether or not his shoulder needed to be dislocated.

"Oh, I told you it was a stupid idea, you git," She whispered softly as she knelt down next to him, afraid that touching him might cause him more harm.

"Well," He groaned as he pushed himself into a sitting position with his good arm. "It was the only one I had." He stretched his neck and started to twist his injured arm back and forth, his teeth clenched until she saw his shoulder jump and he breathed a sigh of relief.

"Shouldn't we get you to a doctor?" Her hand fluttered to her mouth, unsure if she wanted to throw up after just witnessing his shoulder jump back into its joint.

"Well that's the idea isn't it?" He grinned. "Find the Doctor? That was the last of the Huon particles though, I'm not sure how we're going to find the TARDIS now-" But Donna had stopped listening to what he was saying, she was focused on his skin, the red ribbons that had been cut across his skin were slowly sealing closed again. He stood up before he recognized the strangely horrified look she was giving him. "Oh yeah," He scratched at his face where the skin had just newly formed. "Itches like you wouldn't believe."

"You have got to be joking me, what kind of alien are you?" She pushed at his chest, disregarding any further injuries he might have incurred, she was angry at being fooled into thinking he had been in real danger.

"Naw, still 100% human, I just woke up after the Dalek's had shot me, and well. Been like this ever since." He shrugged. "It's going to sting tomorrow though." He added, as though that might lessen the annoyance Donna was feeling.

"You're all completely bonkers!" She threw her hands up in the air in disgust. "Oh," She stopped herself, the memory emerged, Rose and the Doctor, the Time Vortex. "I suppose that makes sense."

"Well, what do we do now?" Jack looked around, clearly out of any more daft ideas.

Sleep had eluded her that night, she didn't know if was the adrenaline still pumping through her, or the fact that she didn't really know how they were going to find the Doctor. She knew a deadline was approaching, and quickly. She couldn't explain why, but she could feel it, if she couldn't get to the Doctor by then, it would have been too late, the dread was like a heavy rock in the pit of her stomach, weighing her down. Jack hadn't come up with any new ideas either, they had both been pretty sure the Heuon particles would get them somewhere at least, maybe not directly onto the TARDIS, but at least give them an idea of where it was, but the rest of those had been destroyed in the first explosion, and now they had nothing.

She had finally tossed and turned so much that she felt exhausted and her heavy lids won the battle with her falling into a restless sleep. Sigma was there, waiting for her, beckoning and pointing up to the sky with a pale hand. The song was there too, louder now, so loud it was like a thunder drumming at her mind and she could feel it in her bones.

Follow the song. He repeated, she followed his direction and stared into the sky, a looming gray planet above them with a distant blue star bathing it in a pale light. She turned back to ask Sigma what it meant, but she found herself instead, springing up out of bed, fumbling into awareness.

"What's…" She whispered before she realized she was awake and the dream was gone. But the song remained, and it was strong. She leapt up from bed, knowing Sigma was telling her something, what that was, she wasn't sure of yet. She found a bit of paper and a stub of a pencil in one of the empty rooms near her own and started scribbling madly, the notes, something in the notes. She finished the melody in a daze and then sat back, taking time to study it in the dim yellow light, looking for a pattern, a hint, anything that she could use.

"Ah," She said finally, a grin spreading across her sleepy face. "Got you now. They're bloody coordinate."

Donna felt like an idiot in the relic of a space suit. It was an old lump of metal and foam of an alien race that had no sense of finesse, or fashion for that matter. It was bulky and awkward, but Jack reassured her it was the only suit that would guarantee to keep her alive in any situation she found herself in. She thought it was unnecessary, Sigma would not have sent her somewhere only to incinerate her on some distant planet; there were easier ways to do that. But she had to admit, she didn't know where she was going, and if there happened to be no gravity and acid spewing out of the ground, it was nice to know she'd have time to Jack to get her the hell out of there.

She stood on the center of the metal platform of the rebuilt teleporter, waiting for Captain Harness to make some kind of progress on sending her off. He had sworn that the machine was ready to go, so she had strapped herself into the clunky suit in preparation, but now she was just getting hot and fogging up the glass in front of her face.

"Oi," She called out louder than necessary, the helmet made her feel like she needed to shout to be heard. "You going to be quick about it, or do I need to get myself a set of wipers in here?" She pointed up to her face where the condensation could be seen clouding up her view.

"Sorry about that," Jack stopped fiddling with the computer monitor and circled around the suit. He switched a button near her shoulder and the difference was immediate. She felt cool air whoosh into the suit and the glass cleared up with the air circulation.

"This will run for about an hour or so, but that's all you've got, so don't go wandering off." He grinned and returned to the computer console. Donna rolled her eyes at the man, not the brightest bulb; he was certainly pretty to look at though. Of course, it wasn't really his fault everyone was suddenly mentally inferior to herself. Instead of making a snarky comment she focused on the two buttons he had rigged into the suit, one for radio contact, which would start up as soon as the machine did, and one for the return trip. She tugged on the flashlight strapped to her chest a little nervously; it was all reminding her that very soon she would be hurtling through space with naught but this ugly suit to keep her safe. And that she was going to be riding in the same machine that had turned Jack into a human blood fountain wasn't reassuring either.

"You about ready?" She called out at Jack, feeling her nerves starting to build up. The waiting was what would kill her, if she stood here much longer, she'd panic and black out, or at the very least, jump off the machine. He dashed back and forth between the main computer and the levers that they had rigged to control the machine. He almost reminded her of the Doctor just then, her resolve slightly strengthened by that at least. He pulled on the headset hanging on the desk and she heard the radio crackle to life as he pulled a lever down.

"Just about." She heard his voice rumble near her ear. Steady on earth girl. You can do this. She assured herself, focusing on breathing slowly. There wasn't really much of a choice, she either did this, or she failed. She supposed if she sat around for a bit, she could come up with a few more clever ideas, her new time lord brain was quite handy with that, but her problem was time. She was quickly running out of it, the irony might have amused her, were she not ready to hurtle through space in a jump suit. But somewhere, something big was happening, and she had to get to the place where the Ood sang of, she had to get there before it happened. She had to get to the Doctor again.

"Ready to go on a space walk, Mrs. Temple Noble?" Jack interrupted her thoughts on the radio, he was grinning now.

"About bloody time-" She started to speak when Jack slapped his hand down on the dramatic red button that served for ignition. The world started to melt around it, looking as though syrup had been poured over her helmet and all the shapes were blurring together. But then they were vanishing, the pink blob of Jack vanished, the dark walls blended into nothing, and then all of the lights shut off and she had the urge to throw up. She stood there, waiting for something more to happen, and hoping the lights would come back on, but she waited in vain, the darkness was complete and there was nothing to change it.

"Jack?" She spoke into the helmet hesitantly, she could still hear the static, and an occasional word that she thought sounded like it was Jack, but nothing she could understand. "Fat lot of good that was," She muttered murderously to cover up how nervous she really was. She flipped the radio to silence to keep the static from reminding her that she might be completely cut off here. She tapped her feet delicately around on the ground, it was very clearly rock, so she had landed somewhere. She just wasn't entirely sure where that was.

Her eyes slowly began to adjust, dim shapes signifying that there had to be light, just not very much. She took slow steady steps forward, her arms swinging about in front of her so she didn't run herself smack into a wall and her feet prodding at the ground so she wouldn't find herself suddenly at the bottom of a dark ravine. The sound of her own breathing was nearly as nerve-racking as the static of the radio, the world around her was oppressive in its silence. The light started to grow stronger as she continued; she guessed that she was in some type of cave and she was rounding to the mouth of it. One last corner brought her into light that was bright enough she could see the curve of the walls itself and the entrance before her. A single step into the light brought them thrumming against her mind all at once. She stumbled back into the dark, trying to catch her breath. It hadn't hurt exactly, but it had been intense. There had to be thousands of them out there, all waiting, all crying out. She stepped out into the light again, and steadied herself for the stream that battered against her mind.

From her stand atop a small rocky hill where the cave opened she could see them all, see the landscape stretched out before her. The horizon was jagged with sharp rocks, low broken mountains; and the blue sun from her dream just crested these rocks, drowning everything in its unnatural watery light. Between her and the mountains, in the valley, were the ships, thousands upon thousands of them, as far as she could see. Some were parked neatly together in rows, while others looked as though they had crashed haphazardly into the ground. There seemed to be some sort of path that wove through them all and so she started down one. Many of them sensed her presence and called out to her warmly, others though, remained silent. Whether it was from a general distrust, or that they had died along with their lost owners, she was unsure.

It was an entire fleet of TARDIS's, lost to the universe on some abandoned world. She brushed her hand against one of the silent machines, in the shape of a silver escape pod, and sadness swept over her. It had ended badly for her crew, very little of the heart of the TARDIS now remained. Would it end badly for her, she wondered, standing alone in this graveyard of time. The Ood had sang of this place, guided her here, surely they had meant to help. Or were they merely pawns in the universe, guiding her to where she needed to be in order to complete the Doctor's song. She looked to the sky above, trying to recognize some type of system, a pattern of stars, fishing into that time lord mind of hers to make some sense of it; but nothing registered as familiar. As simply Donna, that would not have surprised her, but as a time lord, she was stunned silent. This impossible place was unknown to even the time lord's vast knowledge of the universe, and there was something very intimidating about that. It simply did not exist in the known universe, unless you were told where to go.

She felt one particular machine calling to her, drumming away in her heart; she looked around but was unsure about where to go. Her helmet was a nuisance as she tried to turn and locate the source visually.

"Donna!" She heard the radio crackle to life and she nearly jumped out of her skin. "You turned your radio off, what the hell are you doing?"

"Jack," She laughed when she realized it was only Jack. "I'm alright."

"Where are you? What's there?"

"It's TARDIS'. They're everywhere, and so many of them are dying. Jack, it's so sad." She shook her head, the helmet still making it impossible to look around at all the ships. "Jack, I'm going to go." She said, taking a deep breath before snapping the locks that secured the helmet to her head and twisting the globe off. As she removed the helmet she was relieved to find that the air was breathable, and the temperature, while chilly, nothing she couldn't survive. Perhaps it was the machines themselves, working to preserve the only life on this planet of death.

"Going to go? Donna, go where?" She could hear him echo in the empty air around her now as she peeled away the rest of the suit. "I'm bringing you back Donna." She heard him faintly as she left the suit crumpled on the ground.

"Much better," She stretched out, feeling much less claustrophobic out of the suit. She spun then, listening carefully, now she knew the machine wanted to be found it would be easy to track down.

"Donna? Donna!" She heard Jack's voice calling faintly from the radio, but it was already behind her as she walked quickly down the path, searching both ways as she went, the pulse was pulling her toward it faster and faster. It was only a short hike when she had found it, off in its own little clearing she had had to leave the path and clamber over an old crashed machine. It was a photo booth, pictures of children making silly faces pasted to the side, along with grinning adults. A long red curtain hung from the center, a glowing light peeked out at her from the edges. She stepped forward hesitantly and pulled back the curtain, gasping with delight as the scene unfolded.

"Yep," She nodded with a grin. "Always bigger on the inside." She looked around at the graveyard once more before stepping into the TARDIS and closing the curtain behind her.