AUTHOR'S NOTE: This story was written as both an experiment and a challenge. I set myself a 15-minute time limit to write a short Doctor Who story based on a random word provided to me via Twitter. (You can follow me at dashwestwood). That word was "umbrella", as supplied by Shona_Lowri. This story is the result.

Fifteen minutes. One keyword. No planning, no preparation.

Enjoy!

"Don't forget your umbrella."

The Doctor looked at the message on his psychic paper, written in simple handwriting and followed by a lengthy string of numbers. Amy peered over his shoulder. "What does it mean?"

"I'm not sure," he replied. "Let's find out!"

He danced to the TARDIS console and tapped furiously on the keyboard. "Galactic coordinates," he said, anticipating Amy's question. "On the paper. Like directions on a map. Just making sure we make the left turn at Prikryt Sentry Five and... wham!"

The Doctor heaved downward on a lever, setting the TARDIS into motion and rocking the pair back and forth like flies in a bottle. And then, almost immediately, came the thud. They'd landed. "That was quick," remarked Amy as looked around the room.

"Yes, well, we took a bit of a shortcut," the Doctor replied. "No tolls, less traffic. Come along!"

He pulled the TARDIS door open and peered his head outside. A brilliant red sky filtered down into a bustling alien metropolis, with dozens of blue-skinned citizens going about their daily business - some were carrying great heavy bundles of baggage upon their backs, while others rode through the crowd on what appeared to be sleek, futuristic bicycles. The Doctor looked around, tapping a thoughtful finger to his chin.

"Hmm... your basic Yamsraf lifeform, pre-Orchaid War, post Vantra Resurrection... I think we're on one of the Yunta moons."

"You are indeed!" declared a nearby voice - blue-skinned, fat, and sporting a huge grin from ear to ear. "Yunta Twelve, to be precise! Are you not familiar?"

"Afraid not," said the Doctor. "I've heard about it, but I've not yet had the pleasure."

"It's known as many things to many people," the Yunta said. "To the Headless Monks, Yunta Twelve is known as The Moon of Colours. To the Atraxi, it's known as The Eternal Seasons. And to others..."

He was interrupted by an almost instant change - the red sky quickly gave way to a foreboding black, and a torrent of rain poured down. Immediately, the Doctor and Amy were soaked, and they could only look in amazement as the water was practically deflected from the Yunta's skin. An aura surrounded him, repelling the downpour from his skin.

"Doctor!" wailed Amy. "I'm soaked!"

But before he could respond, a shadow loomed over them both. The Doctor looked up to see a concave surface sheltering them, thin and familiar. A handle in the shape of a question mark was gripped by a human-looking hand, and he followed the arm to its owner. Dressed in an off-white safari jacket and pullover covered with smaller question marks, he found a man smiling at him at him. To his side stood a girl - a girl in a black bomber jacket and her hair pulled back in a ponytail. The Doctor stood agog as the man tipped his hat.

"Don't forget your umbrella."