The invaders from Mercury came in ships designed to look like asteroids. Thus did they avoid detection from the unsuspecting humans until they began to lay waste to entire cities. The women of Mercury are winged but must have their wings clipped when they marry. But would human men allow them to keep their wings and their freedom? When the humans start to fight back some of the Mercurian woman begin to wonder. A rip roaring adventure from the beginning of the Science Fiction Age.