Last time…

"Out with it, Martian Man!"

"Sometimes one person's reality is another's television show." He winces, expecting to be slapped, but it doesn't come.

"But you're not saying that our reality is..." It takes the Doctor a moment to realize what she is implying.

"Ohhhhhhh...oh, my, no. Our reality is completely real."

"We should go…" The Doctor says, turning his attention and his head back to his redheaded companion. "Donna. Donna?" He spots her sneaking down the hall. "DONNA!"

"What?" Donna stops in her tracks.

"I really think we should go before we upset the balance of…"

"Oh, come on, Space Man. Don't tell me you're sense of adventure has run out already." She walks back over to the Doctor and pokes him in the chest. "Don't tell me you're chicken."

"Donna, I am not…" he tries to give Donna his best fierce look, but both he and Donna know that it is a lost battle, since they both know that he is 'dying' to explore. "Oh well, the entire balance of reality be damned." At this Donna smiles and he does too. "Let's go trekking."

"Halt!" one of the officers catches their attention. "I've been ordered to take you to the captain immediately." Donna abruptly spins around and spots the small fazor in the officer's hand pointed directly at them. There are two others standing by him, doing the same thing.

"Oi! Those better be on stun!" The officers look at each other uneasily.

"Welcome to my ship. Are you friend or foe? Make your answer quick, because we are kind of in the middle of something." says Captain Kirk from the comfort of his captain's chair.

"Oh, there is no need to be alarmed, we are definitely friendly." says the doctor.

"We come in peace." Donna sings under her breath. "Shoot to kill…" The Doctor hears her and suppresses a wide grin.

"We landed here by accident, though, if you are in need of assistance…"

"Are you with the Star Fleet?" asks the captain just as the ship's sirens go off again due to yet another blow to the ship.

"Um, no, but…" tries the Doctor amid all the commotion.

"Officer Spock, please escort these two to a holding cell until further notice. We need to make sure that neither one of them is associated with the current attack on our ship."

"Yes, Captain." Spock says soberly.

"Oi! Only five minutes on this bleeding ship and we are already in a cell." Donna says disgruntledly.

"At least it's clean; and there seems to be no torture going on." replies the Doctor, alluding to the times they had been in cell in the past. As he looks to his side, Donna follows his gaze to a strange green male sitting in cell with them. "Funny, if he was a she, the captain would be buggering her." The green male looks at him suspiciously.

"And what AM I…chopped liver? I am in this cell, too." Donna says angrily.

"Um…bad timing?" The Doctor ventures before continuing absently, referring again to the green male. "'Course if he was Captain Jack, it really wouldn't matter that he is male…" The green man scoots down the bench to get further away from them. After what feels like an eternity to the Doctor, but is probably more like five minutes, Captain Kirk himself comes to their cell to question them.

"I have some questions for you two." says the captain as he steps into view with Spock.

"Well, I have some questions for you, also." replies the Doctor. "For instance, do you know what is attacking your ship?"

"No, I don't. I was going to ask you that question. It just seems to be an invisible force thrashing itself against us."

"One possibility is that it's us causing the problem. You see, we are not actually from here; we are from another reality that coincides with this reality and I think breeching realities might be causing repercussions on your ship."

"I'm confused."

"Don't worry; he has that effect on everyone." says Donna.

"Oi!" the Doctor interjects.

"What do you mean by realities?" asks the captain.

"What I think he means, Captain, is that his presence here might be creating an instability that is trying to fix itself; and that is the thrashing that we are feeling against our ship." says Spock.

"How did you get here? And where do you come from?"

"Well, just like time is like a cluster of soap bubbles, the universe is not just one. There are several universes. And even though you are a show in our reality…" says the Doctor.

"Wait, a show? Does that mean there is someone out there recording what we do?" asks the captain.

"Well…yes." There is a moment of awkward silence.

"That is a major security breech…" interjects the captain, finally. "…and must be stopped."

To be continued…