The four Doctors, Clara and Donna were running from the bridge back to the Ninth Doctor's TARDIS. Unfortunately an agreement could not be reached between Oklarth true and his evil clone and they had begun to attack one another. There was no choice but to escape to the TARDIS which no easy feat considering the ship had been put into self-destruct mode.
Once they reached the TARDIS the Ninth Doctor opened the door and everyone clambered in. "Be prepared," the Twelfth Doctor said as soon as the door was shut.
"What for?" Clara asked.
"Glitching desktop," the Ninth Doctor replied.
The Twelfth Doctor looked to the Ninth. "I've retained all your memories from the psychic link I forged between us." He looked downwards as he set course for Earth. "I apologize for doing so."
"There's no need to apologize," the Twelfth Doctor said as he pulled a lever that stabilized the TARDIS and had the interface remain on the Ninth Doctor's interior.
"There are going to be remnants, you know," the Eleventh Doctor remarked. He was in one of the corners with his hands crossed looking on at his other selves.
"What do you mean?" Donna asked.
The Eleventh Doctor cleared his throat. "With four versions of me having been in proximity with each other for so long, it will leave fractures in the universe. Nothing monumental of course, but it will have a lasting effect."
"Don't be daft," Donna said.
"You should also explain to her what you did," Eleven said to Twelve.
"What do you mean? What did he do to her?" Ten asked.
"What I did was after your time," Twelve said. "You've no idea what's to come."
"Maybe, but I know Gallifreyan technology when I see it," the Eleventh Doctor remarked. "You used it on her and she deserves to know what sort of effect it will have."
"I know what he's done," Donna said.
The Twelfth Doctor appeared behind Donna and pressed a nerve on the back of her neck with two of his fingers. Instantly the same glowing gold orb that had entered her body had been removed. The Twelfth Doctor held it in his hand. Donna slumped over and he gently had her lay on the floor of the TARDIS. "She's fine, just asleep."
"Is that…?" the Ninth Doctor asked.
"It's a rather pale imitation compared to the real thing that only Gallifrey can offer," Twelve said, "but as we've all seen it works."
"What is it?" Clara asked.
"It retains the consciousness of any Time Lord," the Tenth Doctor then explained suddenly. "It usually serves as a punishment for rogue Time Lords. The High Council of Gallifrey would capture each incarnation of a particular Time Lord and call on them when needed for information."
"Had we stayed on Gallifrey it would have eventually been our punishment," the Ninth Doctor added.
"Punishment? What for?" Clara asked.
"You name it," the Eleventh Doctor replied. "The High Council would pin just about anything on us."
"If used in a good manner the Consciousness Orb could reside within a human that has a part Time Lord consciousness which would then allow them to remain alive," the Twelfth Doctor said. "Without it, they wouldn't last very long. Something I have witnessed."
"I think this is more information than I need," the Tenth Doctor said.
"He's right," agreed Eleven. "If we don't correct our time streams soon we're bound to have a swarm of Reapers on us."
"I'm surprised we haven't already," the Ninth Doctor remarked.
The TARDIS then landed back on Earth in the heart of London. "Where have you landed us?" the Eleventh Doctor asked as he made to open the doors of the TARDIS.
The other Doctors followed the Eleventh out of the TARDIS revealing the London Eye. Just beside the river were three separate TARDIS' side by side. "It would appear she's waiting for us," the Tenth Doctor remarked.
Just above the Ferris wheel in the sky barely out of Earth's atmosphere there was a bright orange light. After the light caught the attention of everyone an explosion occurred, seemingly that of the ship. There was silence amongst the four Doctors as they looked on realizing that the entirety of a race was on that ship and that they were now gone from existence.
Clara stepped out of the TARDIS and stood in between all of the Doctors. "There was nothing can be done," she said. "Lucky for you four you choose the best people to travel with."
"You mean surly female companions who act like they're better than us?" Eleven asked. Clara shrugged.
"We'd be lost without you," the Ninth Doctor agreed. He looked back to the TARDIS. "What are we going to do about Donna?"
The Twelfth Doctor looked to the Tenth. "Once he takes her in his TARDIS back to her time everything will snap back into place."
"So we're going to forget all of this," the Ninth Doctor remarked.
"It's better that way," the Twelfth Doctor replied. "Which is why we need to break the psychic link that we have."
The Ninth Doctor nodded as the Eleventh Doctor went into the TARDIS to grab Donna with the help of his previous self. Clara decided she would wander off for the time being until her Doctor was ready to leave.