Based on the new movie. Some slight spoilers.

Sonic has been secretly living in Canterlot for the past decade; after a moment of frustration he has been found by Twilight Sparkle in an incident that causes a power surge knocking out power all across Canterlot and beyond. Twilight ends up befriending Sonic and has to help him when they draw the attention of the military organisation G.U.N. and especially the eccentric and pure evil Dr Robotnik.

Sonic, Shadow, and Silver have been sent to the world of Canterlot High along with the seven Chaos Emeralds by the Master Emerald after hearing of a prophecy about the fate of worlds. They will have to go through school again if they are to regain the seven Chaos Emeralds and saved the worlds from the eternal darkness, for the emeralds have been claimed by some of the students of Canterlot High.

Based on the movie: Sonic the Hedgehog, but with some changes.

After fleeing to planet Earth, Sonic the Hedgehog has been secretly living in Canterlot City as his new home for the past decade along with his incredible power of super speed. Things went well for him, until he accidentally knocks out the power grid, getting the attention of the military organization, G.U.N., along with the evil genius, Dr. Robotnik.

Meanwhile, the Equestria Girls was preparing for their upcoming graduation, leaving Sunset Shimmer unsure of her future. When the power grid near their school was knocked down, CHS was in suspicion by G.U.N., sending in a special agent to investigate as a result.

When the two groups meet up due to circumstances, Sonic and The Equestria Girls must team up to retrieve Sonic's rings and stop Robotnik from using Sonic's power for world domination while fleeing from the government.

Special thanks to RS-Belle14 (Chapters Prologue, 1-2) and MLPSolarDash1907 for proofreading and knigsonic (Chapters Prologue & 1) as my editor.

Sonic the Hedgehog is owned by Paramount Pictures and Sega.

My Little Pony: Equestria Girls is owned by Hasbro.

Cover art designed by me.

FEATURED: 10/10/20 - Awesome! Thank you all so much!

This story now has TV Tropes page!

I've seen this idea done before, but as a fan of Sonic and MLP: FiM, I wanted to give it a go myself.

This, basically, is the story of Sonic Generations, but crossed over with the MLP:FiM universe, with Spike and the Main Six taking the place of Classic Sonic and Classic Tails with other MLP characters also appearing (most aren't listed to prevent spoilers). Except for Green Hill, there will be different areas explored, as well as pony rivals and different era bosses. So while it will have its similarities to the console and 3DS versions of the actual game, it will definitely have its differences too.

Also, in case anyone was wondering, there will NOT be any shipping in this story. At the very least, no crossover shippings. No SonicxRD, TailsxTwilight, TailsxFluttershy, or anything like that. If there is any shipping at all, it will only be between characters from the same universe. And the only humans in this story are Dr. Eggman and the ones that appear in the "Sonic Unleashed" level.

A big thanks goes to bvge on Deviantart for creating the new logo on the cover art. It's a vast improvement over the old cover art.

The TV Tropes page can be found here.

NOTE: Due to the length of many of the chapters in this story, most of them have been broken up into smaller parts of roughly 10,000 words or less to make the story easier to read.

A Sonic the Hedgehog/MLP:FiM crossover. Eggman enacts a new plan to defeat Sonic the Hedgehog, one which involves our beloved cyan pegasus. Rainbow Dash is pulled into the world of Mobius, and struggles to find a place for herself and make it back home. However, someone unseen is pulling the strings of this conflict for his own ends, and everyone is being pulled into it...whether they like it or not. And what will Rainbow Dash do, when she is forced to choose between her friends and her own heart?

This story is a sequel to Harmony of Chaos

Sequel to "Harmony of Chaos". 15 years after Discord's defeat and rehabilitation, the scattered mane 6 regather at last in Canterlot...along with their children. As new friendships are formed and old pains are addressed, a great darkness arises, as past nightmares return to haunt our heroes. Can their children grow into their new roles and save all?

This story is a sequel to Harmony of Chaos

Shadow leaves Mobius for Equestria after Discord's defeat, hoping to make a fresh start. However, his friendship with Twilight develops until it becomes stronger than he'd anticipated, and leads him to a future he'd never dreamed possible.
However, while Shadow's life takes on fairy tale proportions, Twilight is faced with diffivult emotional hurdles...ones that she will never escape.

Set between MLP:FiM Season 3 and 4.

Sonic, Tails, and Knuckles find themselves against Dr. Eggman once again, the scientist wanting to use the Chaos Emeralds for an unknown plan.

Unfortunately, the plan involved sending the trio to another world, which he plans to conquer as well as seek what are known as the Elements of Harmony. The fate of Equestria hangs in the balance as the heroes of both worlds must join forces against Eggman's robot army.

Can Team Sonic and the Elements foil Eggman’s latest scheme or will they fail?