This story is a sequel to Sonic The Hedgehog x My Little Pony: Equestria Girls G5
While Sonic and company were fighting Dr. Eggman, the Blue Blur accidentally destroys a powerful artifact that transports him to another universe. Now, stranded in a new reality and with nothing but a strange energy in his body, Sonic will travel from world to world in an attempt to return home and stop the evil scientist before he can conquer the Multiverse. Thankfully, he'll count with help from himself... literally.