The Doctor was fiddling sadly with the controls on the TARDIS, when he suddenly got a massive headache. "Ooowww!" he muttered. Next came spasms. The TARDIS quickly changed its destination to the best hospital it could think of. "A hospital? No, no, no, NO, you know what I think about hospitals," he protested. 'You need to get better,' the TARDIS argued. It was answered by a loud noise as the Doctor collapsed on the floor.

Doctor Gregory House left exam room 1 with a demotivated expression. He had just seen a 12-year-old boy, who thought shaving his penis was necessary.. As he put down the patient file on the stack, his internal grumbling was interrupted by a loud ringing sound. He looked outside, where the noise was coming from. It appeared to be a sort of siren, combined with a beaming blue light flickering on top of a blue box. House walked out with interest. On top of the box were the words "Police Public Call Box". "Chase!" he called out. Dr Robert Chase ran down the hall after his boss' voice.

"What is it now, House?" the Aussie doctor asked with a hint of annoyance.

"What is that, and why is it here?" House asked pointing at the box.

"It looks like a police telephone box. Scotland Yard had these installed in the 60s. But they're all decommissioned now. Wonder what this one's here for," Chase explained, tilting his head curiously.

"Well, I suspect it didn't show up the usual way. I've been in the Clinic all day, I would've heard a truck or a forklift moving it here. Best guess: it's a spaceship," House theorized.

"A spaceship? You're joking." Chase replied, raising an eyebrow.

"Not this time. It rang loudly, and beamed blue, like a police siren. I suspect it intended to be noticed," House said, seriously.

"Then, why did it stop just because you came out to see it? Think it came for you?" Chase pondered.

At this point, the TARDIS interjected with a telepathic signal to House.

'Yes." it messaged to House.

"Hang on. Did you hear that?" House asked, shocked by the sudden reply.

"Hear what?

"I think the ship just said Yes," he explained, touching the door.

"I didn't hear anything," Chase stated.

"It only speaks to me. Telepathically," House remarked, impressed at the alien technology.

'What do you want?' House asked the ship, attempting to communicate mentally.

'Help him' the ship replied, opening its doors slightly.

"Wait. I heard that! It said help," Chase exclaimed in surprise. House nodded smugly. Chase nodded back, now accepting the fact that they were talking to an alien spaceship.

"Looks like we've got an alien patient," House stated with amusement, walking in. Chase followed him.

"Well, this is new," House noted, mouth wide open, taking in the scientifically impossible internal dimensions.

"It's bigger on the inside!" Chase exclaimed, to which the TARDIS hummed joyfully at the familiar comment.

House noticed a brown-haired young-looking humanoid alien laying next to the circular dashboard.

"Over here Chase!" he called him over.

"He's in a coma. How's his pulse?" Chase asked.

"Well, that's a difficult question to answer. He's got two of them," House answered. They proceeded to carry the Doctor inside Princeton Plainsboro Hospital, getting a bed on wheels to transport him to an empty room.

Soon after, House and his team were standing in the Doctor's hospital room, the unfamiliar of which, was gazing at him with wonder.

"Okay, while the two of you glare; Chase, check his left pulse, I'll check his right," House instructed, rolling his eyes at Cameron and Foreman.

"Left's threading," Chase informed him.

"And this one won't stop racing. They're uneven." House concluded.

"What do we do? We can't examine him, his biology's different." Cameron asked.

House checked the Doctor's pockets for assistance, as he figured the ship wouldn't bring its pilot to the hospital with no medical information for the doctors.

In the right upper pocket, was the psychic paper, with a UNIT business card on it.

"Looks like some kind of government organisation. Very like the British, keeping things from America," House remarked, calling the number.

A woman's voice answered the phone.

-"Unified Intelligence Taskforce, how can I help you?" she asked Dr House.

-"I'm Doctor Gregory House of Princeton Plainsboro Hospital, I think we've run into one of your alien employees. He's in a coma, but stable" he explained.

-"UNIT only has ONE extra-terrestrial operative. Can you describe the alien patient?" she requested.

-"Brown, messy hair, brown stripy suit, sneakers and two hearts," House described.

The lady on the other end widened her eyes at being informed that the Doctor was ill.

-"Goodness me! That's the Doctor, he IS our one alien operative. Hold on, I'll patch you through to the Brigadier!" she informed. "Apparently I'm going to speak to a Brigadier," House remarked with a smile.

A moment later, an official sounding British male voice spoke to dr House.

-"Hello, Doctor House. I'm Brigadier Alistair Gordon Lethbridge Stewart. I hear you have the Doctor in your care?" he asked.

-"According to your call centre woman, yes. His breathing is fine, but his pulses are all over the place. Do you have a plane you can send over with some alien experts or something? 'Cause we don't know how to treat an alien," House asked politely, informing the Brigadier of the Doctor's condition.

-"Yes! I'll send a team over in a jet right away. They'll be there in a few hours. In the meantime, just keep him under observation, use paddles on either heart if necessary," The Brigadier instructed. House agreed.

Cross-Examination

House- Okay, get your sci-fi heads in gear! Unknown aged extraterrestrial patient, in a coma, with highly uneven heartrates, plural. Cameron!

Cameron- The Brigadier wasn't that worried about his heartrates plunging, so that rules out a heart condition.

A nurse burst into the room.

-Dr House! Something's happened to your patient!

Chase and House ran to the Doctor. They found him totally stable, but sweating.

"He's got a fever!" Chase exclaimed, putting an icepack on the Doctors head.

"Never seen a fever before?" House asked the nurse sarcastically.

"That's not it. He was breathing golden light out of his mouth," she explained.

House called the Brigadier directly, using the number he gave him.

"The Doctor's breathing golden light. What does that mean?" House asked Lethbridge-Steward

"That's regeneration energy. He DID recently regenerate. That must be what's happening. A regenerative coma! Give me your email address, I'll send you some info on the process," the Brigadier responded.

Back in the meeting room:

After all four doctors had finished reading up on regeneration, House wrote REGENERATIVE COMA on the board.

House- Our patient, a specific type of alien known as a Time Lord, very fancy.. has recently regenerated. What that means is, every cell in his body got replaced. Only now, presumably from doing something dangerous in space, energy levels are fluctuating, causing the irregular heartbeats. We need to bring balance. Neutralize the regenerative energy. Ideas?

Cameron- Fever was just in his brain, that's where the energy is flowing to. We need to scan his brain.

House wrote "To do list: scan brain" on the board.

-Anything else?

Chase- We need to check if the blood has clotted in either leg.

"Brilliant! You can do that right away, go!" House commanded.

Chase checked both legs, no discolouration.

To be continued...