It has been years since the Crystal War began. King Sombra, a cruel tyrant from the distant past, returned and reclaimed the Crystal Empire. Since then, he managed to conquer a great swathe of Equestria, thanks to his army of obedient slave soldiers, opportunistic mercenaries, and traitorous collaborators. However, all is not lost, for Celestia has gathered a team of six ponies for an important mission: find the Elements of Harmony and the Crystal Heart. It is these artifacts that hold the power to defeat Sombra and end the war. But if they are to find them, they must work together.