Once upon a time, Erato was a revered dryad. She was the high priestess to the god Pan. But then, mankind tore the forests from the earth. As the trees died, her powers waned. In desperation, she clung to a mighty oak for centuries, but even it fell to the whims of man. Wood from that tree made its way into an intricately-carved mirror in the early 19th century. Many years later, Ellen Tangiers finds the mirror and places it in her bedroom. The wife and mother is slowly corrupted by dryad magic.