"I now pronounce you man and wife." The Clergyman announces to Ten and Elizabeth, who stand arm in arm, in the courtyard of the tower with Clara, Kathy, Eleven and the War Doctor watching on. The clergyman stands in front of a large tent.

"Woo hoo!" Clara cheers.

"You may kiss the bride."

Ten gives his 'wife' a strained smile but this doesn't deter Elizabeth, who grabs his face and does the enthusiastic kissing. Clara cheerfully throws confetti at them but even she pulls a face at the display though all of them are.

"Is there a lot of this in the future?" The War Doctor asks his future self next to him sceptically, raising his eyebrows at the sight in front of them.

"It does start to happen, yeah." Eleven replies.

"It's quite funny when you think about it." Kathy giggles. They stare at her in disbelief. "Or not?"

Ten eventually pulls himself away.

"God speed, my love," Elizabeth says.

"I will be right back." Ten runs into the TARDIS in quick speed, not looking back. Kathy waves at Elizabeth as she follows the others inside the TARDIS.

"Right then, back to the future." Eleven declares.

"You've let this place go a bit." The War Doctor mentions as he glances distastefully around Nine and Ten's console room.

"Ah, it's his grunge phase. He grows out of it." Eleven replies with a shrug.

"Oi, never dis the TARDIS!" Kathy exclaims. The TARDIS lets out an appreciative hum.

An alarm suddenly sounds and the console begins to spark. Kathy pulls Clara away from the TARDIS as Ten receives an electric shock from the console. The walls around the control room change in a blink, turning from bronze-coral to a white, lit up appearance with round circles in the wall.

"Ow!" Ten exclaims. "The desktop is glitching."

"Three of us from different time zones. It's trying to compensate." The War Doctor speaks thoughtfully.

"Hey, look, The round things!" Eleven points out with excitement, grinning widely.

"I love the round things." Ten catches his excitement.

"What are the round things?"

"No idea."

"Sometimes I wonder if you know anything about TARDISes." Kathy shakes her head at them smiling.

"Yes, we do!" Eleven exclaims offended. "I'll show you!" He darts over to the console. "This is the friction contrafibulator." He fiddles and the controls spark again and the desktop outlook shifts into Eleven's later control room look. "Ha! There, stabilised."

It is Ten's turn to give the room a once over, "Oh, you've redecorated." Eleven starts to smile but then, channelling the Second Doctor, Ten pulls a face and mutters, "I don't like it."

"Oh. Oh yeah? Oh, you never do." Eleven pouts.

Kathy shakes her head. "Listen, the Zygons have access to the Black Archive through using Osgood and Kate's appearances. We need to get there." All three Doctors go quiet and look at each other in trepidation.

"Okay, so you've heard of that, then." Clara mumbles.

"Well then." Eleven straightens his bow tie. "Best stop them."

"Uh, no, TARDIS-proof," Kathy tells them.

"Brilliant." Eleven rushes into action, setting up the space-time telegraph. A gift from the Doctor to Kate's father. It is very needed at this moment considering that Kate will be trying to detonate the nuclear warhead 20 feet beneath to save the world.

Kathy twists a knob and static fills the room before a voice that sounds very much like Kate, echoes around them, "…destroy London?"

"To save the world," a second Kate speaks, the real Kate, "yes, I would."

"You're bluffing."

"You really think so?" Real Kate challenges. "Somewhere in your memory is a man called Brigadier Alistair Gordon Lethbridge Stewart. I am his daughter."

"Go!" Ten nods to his future self, managing to get the audio going both ways.

"Science leads, Kate." Eleven calls. "Is that what you meant? Is that what your father meant?"

"Doctor?" Kate has a surprised quality to her voice.

Kathy steps forward. "You know your father was given the space-time Telegraph by the Doctor so there's be a hotline straight to the TARDIS for emergencies. It goes both ways." She's not going to let Kate do this.

"And I also know about the Black Archive and I know about the security protocol." Eleven adds. "Kate, please. Please tell me you are not about to do something unbelievably stupid!"

"I'm sorry, Doctor." Kate breathes, her voice growing softer as she orders someone else to, "Switch it off."

"Not as sorry as you will be. This is not a decision you will ever be able to live with!" Ten tries. There's a sombre look shared between the Doctors.

"I said, switch it off!" Kate demands and the feed is cut to static before either of them can say another word.

"Great." Ten huffs. "Not only can we not talk to her but we also can't get in there because it's TARDIS-proof."

"How can they do that?" Clara asks.

"Alien technology plus human stupidity. Trust me, it's unbeatable." Eleven mutters.

"We don't need to land." The War Doctor remarks. Kathy sees that he has noticed the stasis cube they had taken from the Zygons.

"Yeah, we do. A tiny bit. Try and keep up." Ten mutters patronisingly.

Kathy shakes her head at him. "No, he's right we don't."

"What do we do then?" Eleven asks.

The War Doctor picks up the cube. "Cup-a-soup." All of them begin to grin. "What is cup-a-soup?"

Ten and Kathy pilot the ship while Eleven stands at the open door of the TARDIS as he uses the phone to contact personnel back from the National Gallery. He manages to get a hold of McGillop, the man that had been there when it had been revealed to Eleven, right after Eleven had viewed the Time War painting. Current Eleven orders McGillop to have the painting to be transported to the Black Archive.

"Okay! So, all we need to do now is connect the stasis cube to the Gallifrey Falls painting and we'll be able to get inside." Kathy says to the group.

The Doctors seem a bit reluctant to relive old memories of the day or the same day for the War Doctor, but they need to do that so they can save London.

The TARDIS had been placed into the battle of Arcadia painting. They all stay inside until they need to, listening to the blasts sounding and Daleks crying "Exterminate!" The Doctors open the doors and rush out, sonics in hand.

"Exterminate!" A Dalek cries as it trundles towards them, its laser arm powering up.

Three sonic screwdrivers resonate together to create a sort of shield, merging together and powering each other's up to create a blast that strikes out at the Dalek and sending the unhappy pepper pot crashing out of the painting and into—

—the Black Archive, followed by three of the same Time Lord while Kathy and Clara quickly follow behind.

"Hello." The youngest Doctor greets.

"I'm the Doctor." Ten remarks.

"Sorry about the Dalek." Eleven finishes.

"Also, the showing off," Clara adds with a huff as she steps out.

"Tell me about it!" Kathy exclaims as she struggles to step out because of her dress, Clara helps her.

Kathy sees two sets of Kate, Osgood and McGillop gathered around a table in the middle of the room. She glances at the Dalek as it's the first time she's seen one in person.

Eleven strides over to the humans/Zygons. "Kate Lethbridge Stewart, what in the name of sanity are you doing?"

Kate, human Kate, stands up from the table. "The countdown can only be halted at my personal command. There's nothing you can do."

"Except make you both agree to halt it." Ten shrugs.

"Not even for three of you."

Kathy can't believe how easily this woman will do this, to kill all those people.

The War Doctor shares her thoughts as he frowns as he says, "You're about to murder millions of people."

"To save billions." Kate lifts her chin, not disagreeing with him. "How many times have you made that calculation?"

"Once." Eleven agrees. "Turned me into the man I am now. I'm not even sure who that is anymore."

"You tell yourself it's justified, but it's a lie." Ten declares as he moves over to the head of the table, placing his hands on the edge to lean and look both Kates in the eye. "Because what I did that day was wrong. Just wrong."

"And, because I got it wrong," Eleven adds. He and Ten drag chairs over to the end of the table. "I'm going to make you get it right." Both Doctors plonk themselves on the chairs and cross their legs on the table. Kathy walks over to stand behind them.

Kate seems unimpressed. "How?"

"Any second now, you're going to stop that countdown." Ten informs, waving his hand between the two Kates. "Both of you, together."

"Then you're going to negotiate the most perfect treaty of all time." His future self adds.

"And it'll be a fair and safeguarded on both sides," Kathy says.

"And the key to perfect negotiation?"

"Not knowing what side you're on." Ten finishes. Both Doctors push away from the table with their feet and stand.

"So, for the next few hours," Eleven says as he and Ten pull out their screwdrivers, "until we decide to let you out."

"No one in this room will be able to remember if they're human…"

"…or Zygon."

"Whoops a daisy." Eleven cries as the two jump onto the table and point to the ceiling, using their sonics. The two sets of Kates, Osgoods and McGillops look up and realise too late that one of the memory wiping devices is positioned on the ceiling right above them. Kathy and the War Doctor join in with their own sonics. The memory device sparks and as the countdown reaches 7, the humans and Zygons look befuddled before noticing the countdown.

The two Kates look at each other in horror, they turn to the countdown on the wall and shout, "Cancel the detonation!" The ticking time bomb stops at 5 seconds to go.

"Peace in our time." Eleven declares.

"Cutting it a bit close though," Kathy remarks.

Kathy leans against a shelf, taking in the scene of the Zygons and humans working together in discussions of a treaty. While she knows this will work overall, she also knows of the future rebellion of some of the Zygons. The Doctors had gone their separate ways to let them discuss, one of them is bringing the TARDISes close by. Clara explores the photo array of past companions. Then she goes to the Warrior, who is sitting in the Seventh Doctor's big leather chair.

Kathy sees the War Doctor disappear when Clara turns her back. Clara looks around confused and looks at Kathy to see her reaction. Kathy nods her head towards the other two Doctors, who are chatting together, as it is time to get moving.

The two Time Lords had raced to their TARDISes to follow where the War Doctor had gone after Clara, and Kathy, insisted that the youngest Doctor had not destroyed Gallifrey yet. Kathy knows Clara hopes they'll stop him but the other two Doctors are not intending to do that, just do not want the War Doctor to do it alone.

Two TARDISes park themselves in the barn. Enter the Doctors, Kathy and Clara stepping out of them. A red, rose-like button that glows, stands on a stalk above the Moment box with the War Doctor standing before it, his hand hovering over it.

Kathy observes him for a moment before glancing out through the cracks of the walls knowing that out there, out in the desert, is Gallifrey. The planet where she got part of her DNA from.

"I told you." Clara smiles, looking relieved. "He hasn't done it yet."

"Go away now, all of you." The War Doctor commands, sounding very tired and doesn't even look at them. "This is for me."

"These events should be time-locked." Ten mutters to those next to him, his eyes gazing around the barn tensely. "We shouldn't even be here."

"So, something let us through," Eleven concludes, staring around just as warily.

Kathy looks back at them all. "Of course, there's a reason why the three of you were brought together."

"Go back." The War Doctor says, drawing the Doctors' attention away from her before they can ask her what she means. "Go back to your lives. Go and be the Doctor that I could never be. Make it worthwhile."

The two Doctors stare at their younger self with sympathetic eyes. Slowly, together, the two began to walk over to the man while Kathy and Clara stay back.

"All those years, burying you in my memory." Ten says quietly.

"Pretending you didn't exist." Eleven continues. "Keeping you a secret, even from myself."

"Pretending you weren't the Doctor, when you were the Doctor more than anybody else."

"You were the Doctor on the day it wasn't possible to get it right." Eleven comes up beside the War Doctor, staring at him steadily.

Ten comes up on the other side and lifts a hand over the War Doctor's, which is still hovering over the red button. "But this time…"

Eleven does the same, placing his hand over Ten's. "…you don't have to do it alone."

"Thank you." The War Doctor breathes quietly.

"What we do today is not out of fear or hatred." Kathy hears the emotion in Ten's voice that is trying to escape and she herself gulps down tears threatening to spill. "It is done because there is no other way."

"And it is done in the name of the many lives we are failing to save." Eleven whispers sombrely. The three Doctors are unmoving, staring at the button they have yet to press.

Eleven glances toward Kathy and Clara, who shakes her head. "What? What is it? What?"

"Nothing." Clara murmurs.

"No, it's something. Tell me." He insists. Kathy keeps quiet for this bit.

"You told me you wiped out your own people. I just... I never pictured you doing it, that's all." Clara tearfully admits. It suddenly goes dark.

"What's happening?" Clara questions.

"Nothing. It's a projection." The War Doctor replies.

The scene shifts to what is happening on Gallifrey at this exact moment, the children and people in the middle of the war.

"These are the people you're going to burn?" Kathy asks.

"There isn't anything we can do." Ten replies.

"He's right. There isn't another way. There never was. Either I destroy my own people or let the universe burn." Eleven adds.

"Look at you," Clara says. "The three of you. The warrior, the hero, and you."

Eleven walks over to her. "And what am I?"

"Have you really forgotten?"

"Yes. Maybe, yes."

"We've got enough warriors. Any old idiot can be a hero."

"Then what do I do?" Eleven asks desperately.

"What you've always done. Be a doctor." Clara answers. The fighting seems to have stopped on Gallifrey; people emerge from their hiding places. "You told me the name you chose was a promise. What was the promise?"

"Never cruel or cowardly." Ten speaks quietly.

"Never give up," the War Doctor joins him, "never give in."

"Doctor…" Kathy swallows and steps over. "You can't do this…"

The three men look at her, startled. The images vanish and they are back in the barn.

"You're not actually suggesting that we change our own personal history?" Ten gapes at her.

"Not change it as such..." Kathy replies. "…but you never remembered what happened, did you?"

"Well… I remember getting the Moment, and then… big red button…" Ten starts to say but keeps trailing off as if his memories are not exactly lining up. He looks at his future self with wide eyes.

Eleven swallows and closes his eyes. "…then Gallifrey was gone and I was regenerating…"

"So, you don't remember actually pressing the button?" Kathy presses.

"No… I—" Ten frowns. "History said Gallifrey had been destroyed from the war. I knew I had been getting ready to use the moment, but…"

Eleven grins, clearly having clocked what Kathy is trying to say. He sonics the big red button back into the Moment box.

"There's still a billion billion Daleks up there, attacking." The War Doctor says confused.

"Yeah, there is. There is." Eleven replies.

Ten begins to grin as well. "But there's something those billion billion Daleks don't know."

"Because if they did, they'd probably send for reinforcements."

"What? What don't they know?" Clara asks them, looking confused and excited.

"This time, there's three of them," Kathy explains.

"Oh! Oh, yes, that is good. That is brilliant!" The War Doctor exclaims. "She didn't just show me any old future, she showed me exactly the future I needed to see!"

His future selves look at him blankly while Kathy grins.

"Eh? Who did?" Eleven asks.

He gets ignored. "Oh, Bad Wolf girl, I could kiss you."!"

Ten looks at him in surprise. "Sorry, did you just say Bad Wolf?" Ten asks. He glances at Kathy unsure.

"So, what are we doing? What's the plan?" Clara excitedly butts in.

"The Dalek fleets are surrounding Gallifrey, firing on it constantly." The War Doctor explains to her.

"The Sky Trench is holding, but what if the whole planet just disappeared?" Ten adds.

"Tiny bit of an ask." Clara remarks.

"The Daleks would be firing on each other." Eleven cheers.

"They'd destroy themselves in their own crossfire." Kathy nods.

"Gallifrey would be gone, the Daleks would be destroyed, and it would look to the rest of the universe as if they'd annihilated each other." The War Doctor concludes.

"But where would Gallifrey be?" Clara asks.

"Frozen. Frozen in an instant of time, safe and hidden away." Ten replies serenely.

"Remember the painting?" Kathy asks, Clara nods. "Well, basically we'll be doing that, but freezing a planet in a moment in time, away from everyone."

Clara beams at the news.

Kathy joins Ten in his TARDIS and Clara with Eleven as the three TARDISes patch through to the War room. Kathy watches as Eleven and Clara appear on one half of the monitor screen and the War room on the other. She knows that they'll all be appearing on holo-monitors in the War room.

"Hello, hello," Eleven calls as they get through. From the monitor Kathy is looking at from Ten's TARDIS, she can see the Time Lords under siege and Eleven and Clara in different squares. "Gallifrey High Command, this is the Doctor and Miss Clara Oswald speaking." Clara does a little wave.

"Hello!" Ten greets as they get through. For the other TARDISes, they'll be appearing as a square on their screens while being another hologram in the War Room. "Also, the Doctor along with Miss Katherine Davis. Can you hear us?"

"Also, the Doctor," the screen splits again as the War Doctor appears, "standing ready."

"Dear God, three of them!" The General seems utterly and completely horrified. "All my worst nightmares at once."

"General, please listen to what they have to say first," Kathy warns. "They have a plan to save you all."

"We should point at this moment, it is a fairly terrible plan." Eleven has to add.

"And almost certainly won't work." Ten agrees.

"Yeah, 'cause that's how you get someone to help you." Kathy shakes her head to herself. Ten ignores her.

"We're flying our three TARDISes into your lower atmosphere." Eleven continues, also ignoring her.

"We're positioned at equidistant intervals around the globe." Ten informs. "Equidistant." He grins. "So grown up."

"Focus, Doctor." Kathy nudges him.

The War Doctor is clearly in a good mood and ignores the extra comment. "We're just about ready to do it."

"Ready to do what?" The General asks, looking fearful.

"We're going to freeze Gallifrey." Eleven declares.

"I'm sorry, what?!"

"Using our TARDISes, we're going to freeze Gallifrey in a single moment in time." Ten adds.

"You know, like those stasis cubes? A single moment in time, held in a parallel pocket universe." The War Doctor continues.

"Except we're going to do it to a whole planet." Eleven explains.

"And all the people on it." Ten finishes.

The General looks aghast. "What?! Even if that were possible, which it isn't, why would you do such a thing?"

"Because the alternative is burning." Eleven answers solemnly.

"And I've seen that." Ten inserts.

"And I never want to see it again."

"We'd be lost in another universe, frozen in a single moment." The General argues. "We'd have nothing."

"You'd have each other." Kathy points out. "You'd have your planet, your people, your safety, your lives and hope."

"It's delusional." The General spits. "The calculations alone would take… hundreds of years," Kathy smirks and looks at the stasis cube on the console that will also be on the other consoles as well.

"Oh, hundreds and hundreds." Eleven smirks.

"But don't worry, I started a very long time ago." Ten winks. The image on the monitor shifts and shows all of the Doctor's past incarnations appearing. All calling out to each other for help and all have the same calculations done by the War Doctor's TARDIS and finished in Eleven's. Same software, different case.

"You might say I've been doing this all my lives!" Eleven whoops.

"I didn't know when I was well off!" The General sounds ill. "All twelve of them!"

"No, sir." An unfamiliar voice chimes in. The screen splits one more time, only revealing a set of rather angry eyes with bushy eyebrows to match. "All thirteen!" Kathy sees the Doctors looking at each other confused. The War room shakes as a blast is heard, which distracts them.

"Sir!" The man beside the General cries out in warning. "The Daleks know that something is happening. They're increasing their firepower."

The General closes his eye, gathering his strength for the final decision. "Do it, Doctor. Just do it."

Eleven nods seriously. "Okay. Gentlemen, we're ready." He reaches out to put a hand on a lever. Clara puts her hand over his.

"Geronimo?" She asks grinning. Eleven nods and they pull the lever down.

"Come on, Kathy!" Ten laughs as they grab their own lever. "Allons-y!"

Kathy laughs. "Allons-y!"

The War Doctor rolls his eyes. "Oh, for God's sake. Gallifrey stands!" He pulls down his lever.

TARDISes rush towards the planet and surround it, then whiteout. Pieces of Dalek scatter in space as though they had been blasted apart and no planet remains.

The Doctors, Kathy and Clara are in the under gallery of the National Gallery and gather before the painting of the Time War. They all have their own cup of tea. Ten and Eleven stand by the painting and Kathy stands by Clara and the War Doctor, who sit on the bench. Three TARDISes are lined up by one wall. The opposite is decorated with a collection of roundels.

"You know you should give yourself a trim." Kathy casually remarks to Clara, remembering what Clara had said to her 700 years earlier.

Clara grins unquestionably. "Really? Would it look good?"

"Yeah, you'd suit a bob, but not yet." Kathy points a finger at her with a fake serious face. Clara laughs.

"I don't suppose we'll know if we actually succeeded." The War Doctor sighs sadly as he muses. "But at worst, we failed doing the right thing, as opposed to succeeding in doing the wrong."

"Life and soul, you are." Clara remarks as she sips her tea.

"You may one day," Kathy says.

"Do you know something?" Clara asks.

Kathy shrugs. "Maybe. Spoilers." She then wanders over to the painting.

"What is it actually called?" Ten asks as he squints at the 3D painting of the Time War. He's wearing his glasses as if that'll help him find a clue.

"Well, there's some debate." Eleven replies, taking off his own glasses. "Either No More or Gallifrey Falls."

The War Doctor forces a smile. "Not very encouraging."

"Maybe you're all looking at it wrong?" Kathy supplies.

Eleven frowns at her in thought while Ten asks, "How did it get here? Kathy?"

She shrugs but really, she can't quite remember herself as she always got a bit confused by this bit, which is annoying for her.

Eleven smiles. "I really don't know."

His past self smiles at that. "There's always something we don't know, isn't there?"

"One should certainly hope so." The War Doctor stands. "Well, gentlemen, it has been an honour and a privilege."

Ten nods at him. "Likewise."

Eleven smiles at him. "Doctor."

The War Doctor turns to Kathy. "It's my greatest pleasure to get to know you, Kathy. I look forward to everything."

"I look forward to it," Kathy replies.

"And if I grow to be half the man that you are," the War Doctor turns to Clara, "Clara Oswald, I shall be happy indeed."

Clara startles slightly as she takes a sip of drink but straightens and stands cheerfully. "That's right. Aim high." She kisses his cheek gently.

The War Doctor sighs. "I won't remember this, will I?"

Kathy shakes her head. "I'm afraid not. Time streams being out of sync and all that."

"You can't retain it," Eleven adds.

"So, I won't remember that I tried to save Gallifrey rather than burn it." He lets out a long sigh at that. "I'll have to live with that. But for now, for this moment," he nods to himself, smiling with his hands on his lapels, "I am the Doctor again. Thank you." He turns to the TARDISes. "Which one is mine? Ha!" He goes into the shabbiest TARDIS. It dematerialises.

"I won't remember either," Ten pulls off his glasses, "so you might as well tell me." Kathy plonks herself next to Clara so as to let the two have this chat.

"Tell you what?" Eleven inquires as though he doesn't already know what his past self is asking.

"Where it is we're going that you don't want to talk about."

Elevens sighs. "I saw Trenzalore, where we're buried. We die in battle among millions."

"That's not how it's supposed to be." Ten denies.

"That's how the story ends." Elevens shrugs as if he doesn't care. "Nothing we can do about it. Trenzalore is where you're going." Kathy knows that isn't quite how it all plays out.

"Oh, never say nothing." Ten determines. "Anyway," he shakes Eleven's hand, "good to know my future is in safe hands." He places his cup next to Clara. "Keep a tight hold on it, Clara."

"Hmm. On it." Clara agrees as she places down her own cup and stands. Ten takes her hand and kisses it. Kathy shakes her head at it as she trails after him to the TARDIS but not before hugging Clara goodbye.

"Till the next time, Clara."

"Till the next time."

Kathy gives a nod to Eleven, who nods back.

"Trenzalore." Ten mumbles, turning back to Clara and Eleven as he is half in the box. "We need a new destination because I don't want to go." He steps inside with Kathy following, groaning to herself at the last bit of his sentence, as she needs to be with him so that the timeline stays on the right path.

"Onwards?" Ten asks.

Kathy nods. "Onwards." She smiles at him sadly knowing that as they leave, he'll forget.

A figure walks into the room that Eleven had just vacated. It was a young woman wearing 21st century clothes, brown hair poking out. Blue eyes look around the room as if to double check that no one is there, particularly a certain half Time Lord, before taking off the hood of her coat to reveal that it is Kathy.

She smiles as she walks up to the painting, recalling how she had been standing here 500 years earlier from her perspective. Kathy glances over her shoulder when hearing steps rapidly heading towards the room. Osgood runs in and halts quickly as she takes in Kathy standing in front of her. Kathy knows she's probably confused for a moment by Kathy's appearance at first.

"Kathy!" She exclaims. "You're here! Well, again. Is it safe?"

Kathy smiles at her kindly. "Of course. I wouldn't be that careless." She looks back at the painting. "I assume it fulfilled its purpose?"

Osgood nods eagerly. "Yes. But how did you get a hold of this in the first place?"

"I couldn't possibly say," Kathy replies, smirking. "But you should really put a plaque for the name of the painting otherwise people will get confused."

"What's its name?"

"Gallifrey Falls No More."