Masks, we all wear them, and some possess immense power.

Even as the moon falls from the sky, a young man named Kafei vows to fulfill a promise to wed his beloved Anju. A most treasured possession, his wedding mask, has been stolen, and he intends to take it back no matter what.

Another mask is the source of the cataclysm to come. Allied to the grudge of a creature whose twisted innocence resents the world, it has turned petty pranks into omnipotent cruelty, wreaking havoc and spreading misery to the four corners of the world.

Time is short, and there are only three days to Carnival...