Off the south and eastern shores of old Manehattan, there is an island where the sun never rises. An island where a sickly bluish light suffuses all the darkened air, where trance music rocks and pulses through the grandly sculpted cities like the pumping of the blood. An island to which Equestria is rapidly losing population, as well as influence.

What is this place, this land of Nocturne? And who- or what- is its mysterious ruler?