Long ago on an island far away from any other island, there lived a race of colorful-haired super humans called Equestrians. They have lived for a thousand years on the island of Equestria, which was ruled by two sisters and protected by six Equestria girls chosen by the rulers.

One day, an Alliance of Darkness came from under Equestria to invade as they took the Moon Princess away. The Sun Princess had no choice but to separate the guardians to forbidden nations of the land where no one can find them. After the invasion, the remaining ruler came up with a plan to find the guardians, but none of them were found.

But a human came to the island and said that the only way to find them was a group of brave humans called the Order of the Stone. So the ruler sent three of her knights, Sunset Shimmer, Starlight Glimmer, and Coloratura, to the Human Island to find the Order and bring them to Equestria before the Alliance destroys humanity and resumes the war.

In this crossover story, join Sunset Shimmer on a journey with her friends, the Order, and the Guardians of Equestria, to stop the Alliance from resuming the war and destroying humans.