When the powerhouse country Discordia begins improving its military, a sure sign of war, Equestrian Princess Luna goes on a diplomatic mission to a mysterious country on the opposite side of the planet. Rumors indicate that this country has power and technology beyond anything previously imagined by the Eastern Countries. Does this mysterious country even exist, and will they provide military aid against Discordia?

Has some Tron-like elements; humanized ponies

Sequel here