When they walked inside, the Doctor immediately walked over to the console, and activated something. He picked up a cone with a thin hose attached. He spoke into it saying, “Mr. Green-Pilot-Zygon, if you’d be so kind as to activate a helium-gas bomb next to the TARDIS, that’d be wonderful.” As he spoke, Bon Bon could hear his voice reverberating outside.
{-----}
Outside, the green stallion had done as the Doctor requested. As soon as it detonated, the TARDIS began taking off. A hissing noise filled the air that mingled with the TARDIS noise. Pinkie ran forward into close vicinity of the TARDIS’ recent location. She inhaled deeply, turned around and said in a British impression, “Hello! I’m the Doctor! Wheeee!”
Everyone began howling with laughter, both at her impression of the Doctor, and at the fact that she sounded like a mouse at the same time.
{-----}
Bon Bon walked over to the Doctor. “Why’d you have Jack activate that bomb?” she asked. He looked over at her, smiling slightly.
“I’d reactivated the HADS, which is what caused the TARDIS to vanish the first time when you guys mobbed it.”
Bon Bon nodded. “Oh. Sorry about that, by the way.”
The Doctor shrugged. “It’s ok,” he said. “You were scared. Completely logical reaction. You thought I was going to force you to leave. At least no damage was done.”
The TARDIS made a groaning noise. When Bon Bon gave the Doctor a quizzical look, the Doctor smiled nervously. “Nothing,” he said. The TARDIS began it’s wheezing as the machine landed. When the Doctor checked the scanner, he saw Celestia sitting a desk in the corner of the room, looking right at the camera. She waved, letting them know they could come out. The Doctor gestured to Bon Bon to follow, and the pair walked out. Celestia smiled as the walked out of the box.
“Hello, Doctor,” she said.
Bon Bon leaned over and whispered into the Doctor’s ear, “You know the Princess?" The Doctor whispered back, “Long story. I don’t even know all of it.” Bon Bon looked at the Doctor, confused. The Doctor shrugged in reply. He then turned to the Princess.
“Princess Celestia, this is Bon Bon. She is the leader of the group of Zygons that have been living peacefully in Ponyville for the past six years. The only reason there was any hostility was a simple misunderstanding. I brought her here in hopes that you two would be able to work on relations, so that way they don’t have to live in hiding all the time.”
Celestia smiled. “Of course Doctor. Bon Bon, if you follow me, we can get started right away.”
Bon Bon looked at the Doctor, smiling with tears in her eyes. “Thank you, Doctor,” she said. She followed Celestia out of the room. The Doctor remained standing there for a moment.
“You’re welcome, Bon Bon.”
{-----}
When the TARDIS began rematerializing in Ponyville, Starlight, Berry, and Pinkie were all waiting by the time the Doctor stepped out. As he looked at his three friends he smiled sadly.
“Well, I guess this is goodbye,” he said.
“Goodbye?” Pinkie asked.
The Doctor nodded. “I’ve got to get home,” he said.
His three friends looked at him sadly, and nodded.
“Alright,” said Starlight. “Goodbye, Doctor.”
He waved them in. His three friends gave him a giant hug. After a moment, they broke away, all four of them slightly bleary-eyed.
The Doctor sniffed. “I hate goodbyes,” he said.
Berry gave a half-laugh. “Yeah. Don’t we all.”
The Doctor smiled. “It was nice to meet all of you. It really was. I will miss all of you dearly.” And with that he turned around and slowly walked back inside. The trio of mares stood and watched as the blue box slowly faded away. The three sat there for a moment, but soon got up and slowly walked away. Berry began walking home, and Starlight and Pinkie walked to Sugarcube Corner.
“I never got to throw him a welcome party,” said Pinkie.
“I know, Pinkie,” said Starlight. “I know.”
But suddenly, a familiar wheezing, groaning noise filled the air, seemingly magnified. Starlight and Pinkie darted back to where the TARDIS had vanished. Berry joined them a second later. As they watched, the TARDIS began to reappear. When it had completely vanished, the Doctor popped his head with a grin a mile wide.
“Well… I don’t have to leave just yet, I suppose. I mean, Starlight still has to teach me magic, and Pinkie still wanted to throw me a party.
Besides, you haven’t seen the rest of my wardrobe.”
He swung the door open, revealing his complete outfit. He still had the hat and scarf on, but he was also wearing goggles on his hat, and he had on a long, brown coat with elbow patches.
“But before we do any of that, fancy an adventure to space in the distant future, or perhaps an ancient civilization, lost to time?” he asked, smirking. He opened the other door, but stood in front. “But just one condition…” he said.
“What?” asked Berry.
He smiled. “It has to be amazing.” and with that and a flourish of his hoof, he stepped aside, and the three mares ran inside.
The Doctor walked over to the console, and asked, “Where first?”
The triumvirate of mares halted suddenly. So many choices, and they couldn’t think of any!
The Doctor laughed. “Don’t know? Put on the spot to suddenly? Well, don’t worry. Since you don’t know, then neither will I!” He grabbed the red-knobbed lever and yanked down. The TARDIS began to take off.
“Where are we going?” asked Pinkie.
The Doctor smiled. “No idea! Let’s find out, eh? GERONIMO!”