Agnes Baker may be just an unassuming waitress in this life, but in a previous life, in a time and age undreamed of in the modern world, she had been a powerful witch. It began when she found a strange artifact - a key of some kind - in a dusty collection of family belongings in her attic. When she touched it, the memories came flooding back, along with one word: "Hyperborea." The more she delved into the visions and memories of her former life, the stronger her powers grew... and the more frightened she became.