This is a work of fiction and My Little Pony Friendship is Magic is property of Hasbro. Keep in mind this is an AU and has some differences. This is connected to the Loving Mother world.
Chapter 1; Something Out Of Place
It had become a lazy afternoon for one of the fastest flies in all of Equestria. Her morning had not gone as expected, the weather ponies had spent all morning battling freak weather from The Everfree Forest now no pegasus could use any weather magic or fly too close to the foreboding forest. Worst of all it had thrown all the weather schedule all outs of sorts. IT had taken her almost twenty minutes to clear the sky.
Currently she was lazily sleeping on a puffy cloud. Drifting between sleeping and awake Rainbow felt she believed she had earned a nap. While drifting between sleep and wake she felt a familiar warmth in her nethers. But her mind dashed it away, she had missed her after morning, post noon nap. It would be a perfect, if she could sleep in on of Sweet Apple Acers' Apple trees. Seriously, those trees are really comfortable
"Blah!" The sound jolted her awake. Then the sound repeated in a triple staccato burst "Blah!, Blah!, Blah!"
Rainbow Dash was now completely awake. Instantly she looked around and then over the edge of the cloud. She could see a train coming down the tracks, this train caught her attention it was… Well it was odd? It was not like a normal train, it was was fancy looking and blocky kind of train just like the ones she saw from crystal Empire but it was made of both metal and wood not crystal.
Rainbow tilted her head. "Never seen a train like that? I wonder if it's a special?" Now her curiosity was raised, she needed to satisfy it. She slid off the cloud and glided after the train. Rainbow did not need to push herself to keep up with the train especially since she had training with the wonderbolts. She would never tell Twilight but she had started to study military strategy and flight techniques. She was easily able to follow the train thanks to the her training with pursuits flying.
Rainbow followed the train until she saw the train pulling into Ponyville but it did not stop at the platform it slide onto a side track that went into the heart of the depo close to the roundhouse. Rainbow scanned the scene, she watched as the train was being hooked into Ponyville's power, water and sewer system.
That's when Rainbow watched an older stallion stepped down from one of the train cars. He was dressed in a fancy coat with tails, he was gray pony with a long mustache that covered his mouth, while big bushy eyebrows made him look mean. He pulled a silver watch looking at it briefly before putting it away. Rainbow was still watching him when something strange happened, he zipped away.
Caught off guard Rainbow shot after him but he was nothing but a gray blur. She poured on all the speed she could trying to keep up with the gray form whizzing around town. She could do nothing but watch as he zipped from one stall to another in the market, business, offices, and even a home or two. Before Rainbow could even catch up with him he was back at the train yard zooming into the train.
"Wholely cow!" She exclaimed.
A passing cow gave the pegasus a rueful look. "Well I Never!" She snorted.
Rainbow quickly moved way and after the stallion. She could not even think of how this was even possible. "How did he move so fast? That stallion has to be up to something I mean there is now way you can just park a train in a train yard." Rainbow paused and thought about what she had said. That was when she noticed a mare in a floral print dress trott out of the train. "I mean one that isn't being repaired, I better go tell Twilight what's happening and what we can do to stop him!" Rainbow fumed and shot of towards the direction of her friends home.