A/N Well I think this covers the tiny challenge I was set.
The girls chased the Doctor out of the TARDIS, Amy picking up a jacket as she went. They eventually caught him in a busy market place with solar cells everywhere powering everything and a large sun high in the sky. Dried flowers and intricate mobiles hung from the stalls casting shadows of eagles and dolphins and some animals Amy couldn't even comprehend. She touched one depicting what looked like dinosaurs with two legs and a rear wheel, making the shadow dance on the ground.
As they walked through the market all three quickly shed their outer layers. The dust from the desiccated planet swirled around their feet as the gentle solar breeze played in their hair.
Lucy managed to find something to trade with one of the stall keepers and retrieved three large pairs of gaudy coloured sunglasses. The Doctor chose his first, bright pink with fluorescent yellow dots, and put them on. The girls giggled. "What?" he asked, unable to stop himself laughing as well.
"Super cool." Amy put on her pair of orange ones, adorned with tiny green swirls.
"Super cool," the Doctor echoed, throwing an arm round Amy's shoulder as they laughed quietly together.
"Ohhhh yeah." Lucy said appearing at his other side, throwing on her own red glasses with small purple waves. The Doctor put his other arm around her shoulders and they tried to push through the crowd together.
Lucy quickly tired of the unwelcome body contact in this heat and being pushed around by the cascading crowd. She stepped into a small square with a low, blown glass bell roof that everyone seemed to be avoiding.
"Erm, Lucy, I wouldn't." the Doctor warned, stopping, making himself an easy target to the shoves of the crowd.
"Why not?" she called back from the middle of the square. Suddenly a jet of water shot up from the ground between her parted feet. "Oh." she exclaimed quietly in surprise. She stepped back just a little too slowly. "Aww!" Soaked, she ran out of the fountain and walked toward the Doctor, who was now doubled over in laughter, and brought down a heavy fist to his back that nearly knocked him to the floor.
He coughed once before straightening up. "What was that for?" She narrowed her eyes at him before turning to Amy, who had ended up actually sitting on the floor, clutching at her ribs, crying with silent laughter and pointing up at Lucy as passers by looked down at her worriedly.
"You look," Amy gasped, "you look like you just… just wet yourself!" She broke down again. Lucy turned her eyes to the sky, cursing to the heavens.
Amy finally stopped laughing long enough for them to eventually weave their way out of the crowd. They made their way toward the expanse of clear blue lakes under giant sheets of thick glass. Amy and Lucy stared in awe at the thick waves of shimmering evaporation coming off the glass, a sight that could only be seen in the early days of midsummer, before it all evaporated off. They lay for some time on the warm glass inside the swimming haze and basked in the close sun. By the time they finally got up Lucy's jeans were bone dry again. They walked lazily through the thinning crowd in the market.
Day had slipped into night, unnoticed by the high sun.
Paper umbrellas now hung from most of the stalls, giving some relief from the bright sun and throwing vivid colours across the canopy. The doctor stopped momentarily to try and obtain some from a nearby vendor for the girls, using only his charm and psychic paper. Unfortunately, and not for the first time, his psychic paper outspoke him. He backed away slowly, bowing slightly, two colourful, patterned paper umbrellas in hand as the woman on the small stall tried to thrust more gifts on him. Reaching the girls again he handed Amy a red umbrella with yellow suns and curls painted around the edge and Lucy a sky blue umbrella with outlines of white clouds and yellow flowers stitched into it. Both girls smiled at each other as they put their umbrellas up and put them over their shoulders.
"Oh very nice miss Amelia." Lucy grinned.
"Absolutely spiffing miss Lucy." Amy swished her red hair back and laughed.
Lucy smiled at the doctor, removing her glasses. "Thank you."
"That's ok," he said quietly. He took his own glasses off and studied her face, finding a trace of sadness in every feature. "Are you ok?"
"Yeah." Her smile brightened, sweeping the sadness off her face swiftly.
Suddenly Lucy's watch alarmed. She looked up, slight panic in her eyes this time.
"Back home then?" the Doctor asked.
"Yeah." Her reply was barely more than a whisper. A haunted look entered her eyes. She swept around, walking in the direction of the TARDIS.
Amy and the Doctor quietly conversed behind her. "Do you know who she is yet?" "What wrong with her?" "Why seventeen hours?" "How can she fly the TARDIS?" Amy's onslaught of questions when on and the Doctor could only reuse and throw out his first answer to her, "I don't know!"
Retracting her umbrella, Lucy unlocked the TARDIS with her own key and pushed inside, grasping the control console, turning to smile at her companions when she heard the doors close behind them. "Home then I suppose." She said it almost reluctantly, as if she was letting go of an age-old memory. She caught hold of the rail around the walk way as the Doctor began moving slowly around the console, flipping switches and hitting things. Amy gripped the railing next to her, smiling at her. "Hey," she said, "it's been good."
"No," Lucy looked around the console room, up to the high roof, her eyes eventually mirroring Amy's grin, "it's been amazing." She sighed as her strained grip on consciousness failed and she crumpled to the floor. The last thing she heard was Amy shout her name.