It's all AU.

D'athe had poked his nose into a what had smelled like an interesting shop, and had been delighted to discover that it had all sorts of amusing toys. Including the coiled metal spring he had just nudged over the edge of the building he perched on the roof of. A building with a set of stairs on the outside with a nice wide metal rail he could slide down while watching his new toy walk itself down the stairs.

He leaped off the end of the railing to pounce on the coil as it bent forward to rattle off the last step, rolling with it in his claws, chortling happily to himself. Coming to a rest on his back, he sighed, wriggling against the ground a moment, making himself a trip hazard for anyone not paying attention.

Koschei collected his box of firework materials from under the table where he'd left it, and took it up to the store room above the shop he'd found most of the materials in. Safer, at least, even if they were useless without some sort of propellent and powders for the colored lights. He sighed, giving them a wistful look before heading back outside, hands in his pockets as he wandered along the row of shops.

Spotting someone ahead, he called out a cheerful, "Hello there!"

Scowling at his TARDIS, Theta reached for the mallet hanging from the control panel, intent on giving the recalcitrant machine a good whap. Only to have it shut off completely before he could do so, even the lights fading to almost nothing, and the door opening.

"What? Dismissing me? Oi!" He glared at the central column, crossing his arms over his chest. "Take me back home!"