The Doctor Derpy and Family: Episode 3: Gallopfrey

The Doctor and his companions ran to the TARDIS at full speed. "What does it mean Doctor?" asked Derpy. "Dinky's Cutie Mark I mean."

"Wait!" Dinky said in a high pitch squeal, "I have my Cutie Mark!?" the little filly looked around frantically at her flank, straining to see her newly earned cutie mark.

"Yes muffin, but we don't quite-" started Derpy before she was interrupted by a squeal from her daughter and an enthusiastic hoof pump.

They reached the TARDIS and the doors swung open. The Doctor trotted over to his monitors and frantically started pulling levers and pushing buttons. "No no no no no no no! This is bad, very very bad!" panicked the Doctor. Amethyst was about to ask a question when the TARDIS started shaking violently. Loud noises from all the devices started and stopped, on and off in a cataclysmic frenzy of sound. Sparks flew from the control panel, and a fire broke out on it. The Doctor continued to run around the circular control panel of the TARDIS, ignoring his companion's questions. The TARDIS continued to fly out of control.

"Doctor!" Shouted Amethyst. "Doctor!" The Doctor turned his head. "Doctor, where is the TARDIS taking us!?"

The Doctor looked back at her with nothing but fear in his old eyes. "My home planet."

"But Doctor," said Derpy, "That's impossible. What about the War? Didn't you say it burned?"

"It did!" shouted the Doctor. "They all burned, along with the whole planet." he added quietly.

"Then how can it be taking us there?" asked Amethyst.

"It can't!" shouted the Doctor, "That's why this is bad! It's going to cause a paradox that could engulf all of existence!"

"Then stop it!" ordered Amethyst.

"I'm trying!" he snapped back. The Doctor then pulled out his sonic screwdriver. The blue light at the tip glowing and the the buzzing noise barely making it to their ears over everything else going on around them. He aimed it at the central engine of the TARDIS for a few seconds. The TARDIS stopped vibrating. The alarms switched off. The fire on the control panel subsided. All was silent.

The Doctor put away his sonic screwdriver and started panting deeply.

"Where are we?" asked Dinky.

"Excellent question, little one." replied the Doctor. "Derpy, what are you doing?"

Derpy had started to walk towards the door. "I'm checking where we are Doctor."

"Don't stick your head out the door, we don't know where we are." the Doctor scolded, "I'll use the monitor."

"But, that's never stopped you from just rushing out Doctor, and you never use the monitor to check our location." Derpy said concerned.

"...I'll use the monitor." repeated the Doctor. He pulled down the monitor and looked at the screen. He stared at it blankly for a few moments, then turned to them. "Whatever you do, don't go out that door."