The Doctor bolted from the tent. Donna followed and found him, frozen and staring in the street. Every bit of writing which had plastered the market now read Bad Wolf. Even the Tardis, when they ran to it, read Bad Wolf across the top.

"What is it, Doctor? What's it mean? What's Bad Wolf?" Donna asked.

He swallowed. "The end of the universe." He darted into the Tardis and flew around the console. Donna had barely shut the door before they dematerialized.

"Where are we going?" She yelled.

"I need to talk to Martha Jones!" He yelled back. They landed and he rushed out the door, Donna following in his wake. She'd never seen him so anxious before.

"Martha!" He called into an office full of people.

"Doctor?" Martha said, weaving between people to get to him.

"We need to talk." He told her.

Martha glanced at Donna, who shrugged.

"This way." Martha said, leading them through the office of people suddenly saluting the Doctor. She ushered them into a conference room and sat. Donna sat too, but the Doctor remained standing, pacing urgently. "What's all this about?"

"Tell me about Marion Wolfe." The Doctor said.

Martha sighed. "I'm sorry Doctor, she's dead."

"She's not. That's not the point. How did you meet her?"

"Denial is one of the stages of grief, Doctor. I don't know how you found out, but she went up on that spaceship and then it exploded. She's gone." Martha insisted.

"There are... extenuating circumstances." Donna said gently. "We met someone, a friend of his, and of Marion's from their future. She's not dead."

Martha just looked at her for a long moment. "Really?" She said in a small voice.

Donna laid a hand over one of Martha's. The other woman clearly didn't want to get her hopes raised only to have them crushed. "Really."

Martha took a shuddering breath. "Japan. I met her in Japan when she pulled me free of the panicking crowd. The Toclofane were descending and wiping out everything. I was unconscious and she got me onto a boat, hidden from them."

"In the year that never was." The Doctor breathed. "What next?"

He demanded.

"She stayed with me, the rest of that year. Helped me stay alive, find food, shelter, you name it. She'd been looking out for me before that, gave me gear, notes and directions. I left her at the barracks when the Master came. She was ill, really ill. And then she was there with the Sontarans and she remembered me still. She went up, drugged you and sent you back, then the ship exploded. Before that, I went and saw Jack and we talked about her too."

"Jack? Why does everyone know before me?" The Doctor whined.

"Why is it so important, Doctor? She seemed to think you wouldn't want to see her."

The Doctor's eyebrows shot up. "What, exactly, did she say?"

"She said it would make you sad, seeing her again. Guilt for what she's gone through, even though she didn't blame you for it. Then she said the last time you'd seen each other, after Canary Wharf, you fought."

"What? Fought? Are you sure?" The Doctor froze and fixed her with a stare.

"Hang on. She said 'we both said things that can never be forgotten.' That sounded like a fight to me."

"No, no, no. It wasn't. She always did hate to lie. But what is she doing? Why won't she find me?" The Doctor resumed pacing. "Oh, Martha, you haven't noticed anything catastrophic going on? Alien attacks, suns exploding? Something like that?"

"What? No. Doctor, what's going on?"

"The end of the universe, unless I stop it! Come on Donna, we've got to go!"

"Go where?"

"To find her." The Doctor was half way out the door already.

"But Doctor," Martha said, as they reached the Tardis, "You haven't explained what's going on."

Donna stepped past the Doctor into the ship as he stood in the doorway. "Marion Wolfe. It isn't her name. Well, Marion is, sort of, it's her middle name."

"What? What's her name?"

The Doctor grinned. "Rose Tyler."

Martha froze and the building shifted under her feet. When the shaking stopped, she climbed back up and discovered that the Tardis was gone. No noise, no wind, just gone. And the world was a whole lot darker.

The sky was dark when Rose and Tony appeared on a street in Chiswick, though it was eight o'clock in the morning.

She scared off some looters and made camp in an electronics store. Soon enough, the sound of Daleks echoed through the speakers.

Rose bit her lip and looked at her brother.

"Those are Daleks, huh?" He asked.

"Yeah."

"But you're gonna beat um?"

"Yup." She kissed the top of his head and picked him up again. "Let's go beat the Daleks."

She walked towards the Noble's house, figuring that was a pretty good place to expect the Doctor to turn up. She'd find him today, she knew that for sure. It was still a bit mysterious though, the last line of River's note. You must be the last one to leave the Tardis. Rose wasn't a coward and she was trained to face dangerous situations. She was good at it. When it came down to it, though, she'd put her trust in River.

Rose shifted to the shadows as the Daleks descended to Earth. Mostly they were herding people into a line in the street. One though, was about to attack two people. Before it could finish saying 'exterminate', Rose leveled her gun at it and blasted it's dome off. Mickey was right, it was a good gun.

Through the smoking remnants of the Dalek, Rose got a clear view of the people she'd saved.

"You're Donna Noble's family, right? I'm Rose Tyler, and I need you."

Rose took over Wilf's laptop while he tried convincing Sylvia that Donna really was in space. Tony sat very close to Rose, sucking his thumb as she worked.

All of a sudden the screen flickered to a conference call.

Jack sat in the hub in Cardiff. He'd been expecting this day for a while, ever since Rose appeared, but that didn't mean he was ready for it. Rose had been able to fix his vortex manipulator while she was there, at least the teleport part of it, so he'd be able to make his rendezvous point, but he wasn't sure how they'd survive that many Daleks.

Could anyone really blame him for the despair that set in when the Torchwood computers started calling out for help? Then she called him by name.

"Captain Jack Harkness, shame on you! Now stand to attention, sir!"

Rose watched helplessly as Harriet Jones gathered the Doctor's secret army. Martha, Jack, Sarah Jane... But without a webcam, Rose couldn't join them. She was surprised that the Doctor had just been with Martha, though if Donna had put the pieces together, the Doctor may have wanted more information from Martha. And, from the set of Martha's mouth when she told the others about the visit, the Doctor had given her some things to think about too.

The plan they worked out was brilliant. Rose was getting ready to cheer when Ianto pointed out that it would expose Harriet to the Daleks.

Rose tapped her lips. "That won't do." She told Tony and quickly hacked into the subwave system, using it to find the coordinates of Harriet Jone's house.

"Right, Wilf. Thank you. You're wonderful." She kissed him on the cheek, picked Tony up again, and hopped.

"Harriet Jones, good to see you, give us a hug." Rose embraced the older woman and hopped. She wasn't certain how close she needed to be in order to transport them along with her, but she wasn't taking any chances.

"Was that?" Martha asked as Harriet's screen went to static. They'd seen a flash of blond hair just before it vanished.

Jack grinned. "Yes, it was."