Sonic, the CMCs, and Spike teams up with their new allies to get the emerald before Robotnik and Knuckles while the Rainbooms investigates the Dazzlings' latest scheme in Hoovaii.
When a abused 6 year old boy named Kyle finds a diamond powered by the full moon, he is turned into a unicorn colt, but luckily he now has Twilight Sparkle to care for him.
After getting lost in the Everfree Forest, Spike finds a mysterious tree with a strange capsule machine. Spike discovers something here that guarantees his life will never be quite the same again.
After the two groups meet up due to circumstances, Sonic and the Equestria Girls must team up to defeat an evil genius, who wants to use his power for world domination, while on the run from the government lead by a special agent.
The entire country of Equestria and small section outside of the border have been sent to an entirely different world, and every creature was given a form in between human and what species they are. Even meet some new friends on their adventure.
For one month only, Spike Scorpio is determined to pass a Co-Ed experiment. Will he succeed, or will it be the last he'll ever get to see his new girls again?
Fifteen Year old Spike has found himself attending an academy for girls as part of a co-ed experiment. Will he be accepted or go crazy from hormone overload.
Spike attracts the hearts of certain girls but it is hard for them to get his attention as he spends most of his time with his delinquent brother, Scales. The girls try to win Spike's love while staying on Scales' good side.