My Little Pony: Family is Magic

I'm sure you've heard of Twilight, rainbow dash, and the rest, but what if there was one little change? What if Twilight and the rest failed because of it? Cue the order family, our heroes (from oldest to youngest):
Writehoof, the eldest of the 4, is a female unicorn and a writer. She is often sassy with her 3 younger brothers, but is dependable and nice when she needs to be. She already has her cutie mark, which is 2 quills crossing a book, and often rubs it in her brothers' faces. She is bright yellow with bright green eyes and a sleek orange mane and tail.
Sparky: An earth pony who wants to understand magic. While other earth ponies have their own magic (i.e. pinkie's pinkie sense and maud's ability to destroy boulders), Sparky has none, yet he is devoted to understanding it. He is male, purple, has a mane simillar to twilight's, and has recently gotten his cutie mark: a star(Twilight's cutie mark) with 2 question marks crossing over it.
Lawn Order: A unicorn who loves detective novels and action. He mastered a cloud walking spell when he was little because he needs to be able look up there to be a detective. He is around the age he might get his cutie mark soon , and he can't wait! He is dark blue with white hooves, eyes, and mane.
Daredriver: As youngest of the family, He is often left out of things, but he is a real daredevil! He is also very good with tools. He is a pegasus, and is vibrant red with blue eyes and a yellow mane and tail.
It all begins when the family falls asleep, and when they wake up, no one except the order family remains... (This story falls into the nonexistent "Mystery" catagory)