Inspired from the story Equestrian Girls: Secrets Beyond the Stars by GoldenGoomba900.

Sonic and his friends have faced and defeated many foes in the past and foiled many of Eggman's plans to rule the world. But now their most greatest challenge and biggest adventure they had ever faced is about to begin! When aliens in space received energy spikes of magic and the power geodes that Twilight and her friends had just gotten from Camp Everfree! The Planet Venus sends their own Princess and ship of highly trained alien soldiers to find the source of the energy spikes and bring it back to her planet! But Sonic and his friends are sent to Earth thanks to Dr.Eggman's newest plan to rule Möbius along with the 7 Chaos Emeralds and 7 Sol Emeralds! Now with aliens on the hunt for the HuMane 7 and their world in great danger it's up Sonic and all his friends to save Earth and humanity from total aniolation!

If Earth's military isn't enough and when Earth faces its darkest hour. Then it's time to call in…Heroes! Not just any Heroes. SONIC HEROES!

PS: The Custom Character from the new Sonic Forces game is in this and my idea my Custom Character for the game is a blue fured Wolf wearing the exact same gear from the custom character from the Sonic Forces trailers, but with high tech green lensed glasses. More of my own Custom Characters will appear as well.

Takes place after the original Sonic Heroes game, the Sonic X tv show, Sonic Riders, Sonic Riders Zero Gravity, Sonic Rush, Sonic Rush Adventure, Sonic Rivals, Sonic Rivals 2, and Sonic Unleashed. Also takes place after the 4th Equestrian Girls movie.

Sonic the hedgehog is owned by Sega.
MLPEQG is owned by Hasbro.
Human tag is in this story.
All Sonic characters have their Sonic X voices