Shepherdesses living on the top of the world prevent that clouds come to fertilize the earth of their invaluable water.One of their congeneric, with blue hair, leaves the group to find in a "bridal" dance a black cloud that she saved.The "frolicking" choreographic of the black cloud and the shepherdess finishes in the fall of this one which is thrown through the cloud and fall on the ground. From this sacrifice will be born grondement of the clouds, storm, and the rain which will sow the world.