The town of Unity sits perched on the edge of a yawning ravine where, long ago, a charisma of angels provided spiritual succour to a fledgeling human race. Then mankind was granted the gift of free will and had to find its own way, albeit with the guidance of the angels. The people's first conscious act was to make an exodus from Unity. They built a rope bridge across the ravine and founded the town of Topeth. For a time, the union between the people of Topeth and the angels of Unity was one of mutual benefit. After that early spring advance, there had been a torrid decline in which mankind's development resembled a crumpled, fading autumnal leaf.

Following the promptings of an inner voice, Tula, a young woman from the city, trudges into Topeth. Her quest is to abide with the angels and thereby discover the right and proper exercise of free will. To do that, she has to cross the bridge - and overcome her vertigo. Topeth is in upheaval; the townsfolk blame the death of a child on dust from the nearby copper mines. The priests have convinced them that a horde of devils have thrown the angels out of Unity and now occupy the bridge, possessing anyone who trespasses on it. Then there's the heinous Temple of Moloch!

The Abdication is the story of Tula's endeavour to step upon the path of a destiny far greater than she could ever have imagined.