"Hello again!" the Doctor greeted Donna and Juras, as the four travelers met up halfway between the communications and power stations.

"How did you fare?" asked Turlough.

"Well enough," said Juras. "I couldn't have done it without Donna, though. You found quite a catch there, Doctor."

"Shut up," Donna replied. "You were the one doing all the science-y stuff: I was just holding down levers."

"But distracting the guards by flooding the toilets: that was brilliant," Juras insisted.

"My granddad always says water's the worst thing for electronics. That's his excuse for not learning how to surf the web."

"Looks like it worked," the Doctor announced, peering out the window. And indeed, a legion of cybermen was confusedly marching into the invisible barrier. "In the grand scheme of things, I'm not sure we changed much," he speculated. "History says the Kahler eventually win this war, and frankly this wasn't that big of a battle. But that doesn't detract from our excellent teamwork! You were all brilliant." Noticing Turlough's faraway gaze, the Doctor continued, "It's for the best, you know, since none of us should've been here in the first place, right? …Turlough?"

"Hmm? Oh, yes," Turlough agreed. "I was just wondering, Doctor: can we have a lift? Just a few kilometers west, I mean. Our ship was shot down not far from here, and repairs shouldn't be too difficult once we find the missing engine."

From the outside, the TARDIS was exactly as Turlough remembered it. He was tempted to run towards it, but restricted himself to squeezing Juras' hand excitedly as they approached.

"Miss Maateh, may I present the TARDIS," said the Doctor, opening the door with flourish. "Donna, Turlough: welcome back."

The interior was much darker and dirtier than in Turlough's time. And even though the stark-white walls with big, protruding circles had always struck him as frivolous, he much preferred it over the current décor. It wasn't the only TARDIS he'd been in, but even without the telltale exterior he'd have recognized it as the Doctor's. The console still looked as though it could fall apart at any moment, and the loud humming from the engine showed its age. Over a year had passed—centuries, maybe, for the Doctor—but still, the TARDIS felt like home.

Having never been in any TARDIS before, Juras was awe-struck. The science didn't bewilder her, of course, but reading about alternate dimensions and actually stepping into one were two completely different things. Juras struggled to quell her excitement while Turlough sauntered over to the console and punched in the coordinates of their crashed ship.

"You came here in that thing?" exclaimed the Doctor upon landing, opening the door and gazing at their bedraggled vehicle. "You're a lot braver than I remember."

"You live in a police box," Turlough countered defensively.

"Yeah, but it's not actually a police box," the Doctor pointed out.

"And mine's not just a spaceship," retorted Turlough. He didn't have to wait long for the Doctor to put the pieces together.

"Hang on," he said in astonishment and growing excitement. "Is that what I think it is?"

"It's an ARTEMIS II," Turlough told him. The Doctor began circling the ship in newfound amazement.

"Oh that is brilliant," he praised. "Donna, come look at this: this is a marvel of technology. Did you build it yourself?"

"Juras helped a bit," admitted Turlough. This came as more than a little surprise to Juras, who had no recollection of assisting with the design; not to mention that Turlough despised sharing credit for anything. She realized this must have been in the alternate universe, and made a mental note to interrogate Turlough about it later.

"But how did you even come up with it? This is eons beyond your time," marveled the Doctor.

"Not really: all the capabilities were already there," Turlough replied. "And I had a bit of an advantage having been a time traveler already."

"Yeah, but this is nothing like the TARDIS," he said. "This is…Well done! Really, well done."

"Alright, stop getting all spaceman about it," said Donna. "What's an ARTEMIS II?"

"Time travel," said the Doctor. "A whole new type of time travel. The Time Lords theorized about it, but no one actually bothered to make one because…well, because we already had TARDISes."

"Basically," Juras stepped in to explain, "it's a time machine, but it travels like a normal spaceship through space. The faster we travel through space, the faster we can travel through time. ARTEMIS: Artificial Relativity Through Entropy Mechanisms In Sequence."

"So what happened to the first one: did you crash it?" Donna wondered.

"This is the first one," said Juras.

"Then why's it 'ARTEMIS II'?"

"There were two theories about ARTEMIS drives," the Doctor explained, "The first was 'Artificial Rotation Through Energetic Muons In Series', and the second was what you see here. But," he continued, redirecting his attention at Turlough, "how did you know that?"

"The Magician told him," Juras said when Turlough didn't answer.

"What magician?" the Doctor wondered.

"The Magician," said Turlough. "Another Time Lord whose acquaintance I made soon after I left for home."

"I've heard of him," mused the Doctor. "Always forgetting council meetings because he was off witnessing some historical event or another. Too much of a rule-follower for my taste, but I was always a bit curious to meet him. What was he like?"

"Very eccentric," Turlough replied, "more so than you, even."

"Good, good," said the Doctor.

"Better than the Master, by all accounts," added Turlough.

The Doctor laughed nostalgically, but then that haunted look in his eyes only deepened. They stood in awkward silence for a short while.

"Need any help reattaching that engine?" the Doctor offered.

"No, I think we've got it. Thank you again for picking it up for us."

"My pleasure," he said.

"Doctor," began Turlough, but he trailed off uncertainly.

"He talks about you all the time," Juras said bluntly. Turlough fixed her with a mortified stare. "Well, you do," she maintained. Shaking the Doctor's hand warmly, she added, "It was wonderful to meet you, Doctor."

Turlough extended a hand to Donna, which she brushed aside, hugging him instead.

"You won't, you know…?" asked Turlough quietly. Donna glanced at the Doctor and sighed.

"Best not," she admitted.

"Thank you for all your help," Turlough said. "And it's good to see he's got someone like you looking after him."

Donna and Juras embraced, while the Doctor and Turlough shook hands.

"Thank you for everything, Doctor, truly."

"You know, I'd forgotten how much I missed traveling with you," the Doctor replied. It was the nicest thing he could've said.

"I hope you find a way to set it all right again," said Turlough.

"I gave up hope for that a long time ago," he replied.

"There's always hope, Doctor," smiled Turlough. "You taught me that."