A thousand years on, the Land of MU had grown into a flourishing empire — until the Great Prophecy of the Secromicon came to pass and plunged the continent into chaos. The leaders who once ruled MU were brought low, while power-hungry feudal lords tore the central government apart through endless internal warfare. The empire collapsed, its millennium of peace and prosperity reduced to a fading memory beneath a land stained with blood. War laid the once-beautiful realm to waste, yet petty lords kept building their war machines, vainly hoping to restore what had been lost.
It was in this era of ceaseless bloodshed that the Gates of Hell were flung wide, the work of one foolish man's blind ambition.
Antonias, a lord deceived by the evil sorceress Lemulia, unwittingly unleashed Kundun, the Devil of Darkness — a demon that had been confined only with great difficulty behind the Seal of Etramu.
"Now this land shall be mine again. I have banished Peace for all time… the Sun will no longer shine. This earth shall be mine, and cunning men will be my slaves and cattle."
Awakened from his endless slumber, the Ancient Devil walks again among the living, defiling everything he touches. The stars lose their course and the stench of fear and blood spreads across the land as Kundun vents the rage of his long captivity. The forsaken realm of MU becomes a home for his minions, and for two long years his evil reign corrupts all that was once pure. Nightmare's Day — once only words in the Great Prophecy — has come true. Now the wise turn to their studies once more, clinging to the prophecy's promised ray of light: the seal of Etramu itself, broken into eight scattered pieces. Only when those fragments are reunited will peace return to the land.