After suffering an energy crisis caused by the war against the dragon empire, Equestria turns to a new source of energy called Aerial power. the plan was to use Aerial power generation towers known as Horizon Towers that can generate almost unlimited amounts of energy. However to facilitate their creation, the nations of Equestria divided into three blocs. the nations grouped around Cloudsdale was called the Alliance of Aerial Energy and Pegasi Nations or simply known as The Alliance, The Earth Reform Union with the Crystal Empire as it's core state, and The A.U.A. (Advance Unicornian Alliance). Yes, the war against the dragon empire has divided the once harmonic land of ponies and started quarrel among themselves. During this strife, a mysterious group known as Angel Feather suddenly appeared and began interfering with the affairs of the three nations.