They had escped 1962 with the help of a girl named Sally Sparrow. They had been there for only about a month, but not having been able to travel for about three months now, but first things first, they had to make a pit stop in...
"Cardiff." He said Happily
"Cardiff?" Martha asked confused.
"Ah, but the thing about Cardiff, it's built on a rift in time and space, just like California and the San Andreas Fault, but the rift bleeds energy. Every now and then I need to open up the engines, soak up the energy and use it as fuel."
"So it's a pit stop."
"Exactly. Should only take twenty seconds. The rift's been active."
"Wait a minute. They had an earthquake in Cardiff a couple of years ago. Was that you?" Martha said accusingly.
"Bit of trouble with the Slitheen." he admited.
"A long time ago. Lifetimes. I was a different man back then." He smiles at the baby in a playpen near by.
"Finito. All powered up." He looks down at the scanner and sees Jack running for the Tardis. He sets the Tardis in motion and they feel something slam against the Tardis with a bang.
"Whoa! What's that?"
"We're accelerating into the future. The year one billion. Five billion. Five trillion. Fifty trillion? What? The year one hundred trillion? That's impossible."
"Why? What happens then?"
"We're going to the end of the universe."
-DW-
"Well, we've landed." He says finally.
"So what's out there?"
"I don't know."
"Say that again. That's rare."
"Not even the Time Lords came this far. We should leave. We should go. We should really, really go."
He grins at Martha, scoops up Kiam and dashes to the door. Grabbing his coat on the way.
He opens the door and spots a man laying on the ground nearby.
"Oh my God!" Martha says. "I can't get a pulse. Hold on. You've got that medical kit thing." He hears her run into the Tardis and looks down at the man.
"Hello again. Oh, I'm sorry."
"Here we go. Get out of the way. It's a bit odd, though. Not very hundred trillion. That coat's more like World War Two."
"I think he came with us."
"How do you mean, from Earth?"
"Must have been clinging to the outside of the Tardis all the way through the vortex. Well, that's very him." He says and adjust Kiam to his other arm as the child began to squirm. He had started walking recently and just like his Dad he loved to run.
"What, do you know him?"
"Friend of mine. Used to travel with me, back in the old days."
"But he's. I'm sorry, there's no heartbeat. There's nothing. He's dead."
He stands there and watches as Jack gasp suddenly for breath and grabs Martha, who screams. He sees Kiams face fall and starts talking softly to him before he starts to cry.
"Oh, so much for me. It's all right. Just breathe deep. I've got you." Martha says holding her chest.
"Captain Jack Harkness. And who are you?"
"Martha Jones."
"Nice to meet you, Martha Jones."
"Oh, don't start." He said aloud.
"I was only saying hello."
"I don't mind." He watches Martha help Jack stand up. Still not moving towards him.
"Doctor."
"Captain."
"Whose this." Jack asked.
"My son, Kiam."
" Well it's good to see you."
"And you. Same as ever. Although, have you had work done?"
"You can talk." Jack Huffed.
"Oh yes, the face. Regeneration. How did you know this was me?"
"The police box kind of gives it away. I've been following you for a long time. You abandoned me."
"Did I? Busy life. Moving on."
"Just got to ask. The Battle of Canary Wharf. I saw the list of the dead. It said Rose Tyler."
"Oh, no! Sorry, she's alive. He's actually her son too."
"You're kidding."
"Parallel world, safe and sound. And Mickey, and her mother."
"Oh, yes!" Him and Jack hug.
"Good old Rose." he hears martha mumble.
They start walking in the wasteland of the planet.
"So there I was, stranded in the year two hundred one hundred, ankle deep in Dalek dust, and he goes off without me. But I had this," he holds up his arm. "I used to be a Time Agent. It's called a vortex manipulator. He's not the only one who can time travel."
"Oh, excuse me. That is not time travel. It's like, I've got a sports car and you've got a space hopper."
"Oh ho. Boys and their toys."
"All right, so I bounced. I thought 21st century, the best place to find the Doctor, except that I got it a little wrong. Arrived in 1869, this thing burnt out, so it was useless."
"Told you." He said smugly.
"I had to live through the entire twentieth century waiting for a version of you that would coincide with me."
"But that makes you more than one hundred years old," Martha said startled.
"And looking good, don't you think? So I went to the time rift, based myself there because I knew you'd come back to refuel. Until finally I get a signal on this detecting you and here we are."
"But the thing is, how come you left him behind, Doctor?" Martha asked.
"I was busy."
"Is that what happens, though, seriously? Do you just get bored with us one day and disappear?" He glared at her. After all he had told her she should have known better than that.
"Not if you're blonde," Jack said. "Than you get a baby."
"Oh, she was blonde? Oh, what a surprise!"
"You two! We're at the end of the universe, all right? Right at the edge of knowledge itself and you're busy blogging! Come on." He stands on the edge of a cliff and looks at the construction below.
The little boy in his arms points and makes noises happily.
"Is that a city?" Martha asked.
"A city or a hive, or a nest, or a conglomeration. Like it was grown. But look, there. That's like pathways, roads? Must have been some sort of life, long ago."
"What killed it?"
"Time. Just time. Everything's dying now. All the great civilizations have gone. This isn't just night. All the stars have burned up and faded away into nothing."
"They must have an atmospheric shell. We should be frozen to death."
"Well, Martha, Kiam, and I, maybe. Not so sure about you, Jack."
"What about the people? Does no one survive?"
"I suppose we have to hope life will find a way."
"Well, he's not doing too bad." Jack points and He looks to see a man dashing through the city pursued by a tribe.
"Human!" One of them Yells.
"Is it me, or does that look like a hunt? Come on!" He switches Kiam to his side and takes off at a run with Jack and Martha behind him.
"I've got you."
"They're coming! They're coming!" The man says frantically.
"Jack, don't you dare!" He says seeing, Jack pull out a revolver. He watches Jack hold it up in the air and pushes, Kiams head against his chest and cover's his other ear with his hand. He sees Jack watching him and nods. Jack shoots it into the air and the tribe stops. He loosens his grip and Kiam looks unhappily at him.
"What the hell are they?"
"There's more of them. We've got to keep going." The man replied.
"I've got a ship nearby. It's safe. It's not far, it's over there." He points and as he does so , more men appear on the cliff. "Or Maybe not."
"We're close to the silo. If we get to the silo, then we're safe."
"Silo?" He ask, his mind all ready made up.
"Silo." Jack answers
"Silo for me."
They dash towards the silo. "It's the Futurekind! Open the gate!" The man yells at the guards.
"Show me your teeth! Show me your teeth! Show me your teeth!" The guard yells as they approach the gate.
"Show him your teeth."
He shows his teeth
"Human! Let them in! Let them in!" He runs in as the gates open and turns to make sure Jack and Martha made it through safely.
"Close! Close! Close!" He watches as the guard fires at the ground. Kiam starts screaming not use to the sound of gunfire. He pulls him on to his chest and wraps his coat and his arms around him, shushing him quietly.
"Humans. Humani. Make feast."
"Go back to where you came from. I said, go back. Back!" The guard yells.
"Oh, don't tell him to put his gun down." Jack snaps.
"He's not my responsibility." He replies still gently bouncing Kiam.
"And I am? Huh, that makes a change."
"Kind watch you. Kind hungry." He waits until they leave before stepping forward to the guard.
"Thanks for that."
"Right. Let's get you inside." The guard says.
"My name is Padra Toc Shafe Cane. Tell me. Just tell me, can you take me to Utopia?"
"Oh yes, sir. Yes, I can."