Rebirth of the Magi
Long ago, so they say, there was magic. The elves could use it, and the humans could not. Everyone thought that magic was an intrinsic property, something that elves were born with and brought out from within themselves. They were wrong; the magic was a force, an energy like light that was around them. The gift of the elves was only its control. It was abused, and overused. Countless wars over a number of things ranging from land to petty politics burned out the supply of magic until it was gone. It has been centuries since then, and the only things that elves have to prove their ancestors' great abilities are a few traits that set them apart from humans, and the records of ancient history.
The world has long since moved on. The people, faced with a need for survival, eventually turned to a new kind of magic. Technology was something that anyone could use or invent, human or elf. After a long time civilizations even greater than those fueled by magic came to maturation, and it no longer seemed important to revive the old ways. Yet some, using the new magic, would nonetheless try to bring back the old...
Suumar 28, 645 Mundane Era. Around noon. Gateway City, with its suburbs, is hit by something terrible, and all known communications from the city cease. A wave of energy pulses out from near the city's center. Most technology reacts to the wave as if it were a powerful EMP blast. People have a far worse reaction.
Their bodies are twisted and transformed, rapidly and extremely painfully, to the shape of wild animals. The wave grows weaker as it goes farther from its source, so those far from the city's center are only partly changed. The pain is unbearable; most pass out from it for at least a few hours. When they wake up, many cannot control the instinct and the shock of their new shapes. They go insane. They become feral, unable to think or act any differently from the animal they have come to look like. Those who remain sane must work together to survive this disaster, escape the ruined city. And what then? Nobody knows...