The world of The Green forbids demons. They have always been sent away whilst still young children, over the river to an unknown fate...until Janeen. Ignorant of her true nature, she unwittingly bewitches the folk of her forest village until, on the cusp of womanhood, the inevitable finally happens. As a young woman demon, she soon brings chaos to the ordered ways on the other side, and with it profound consequences not only for herself, but for her previously unchanging world. She may not know what she really is, but the wonder that makes her a demon finally brings back something long lost to the preservation of a fragile Earth; something far vaster than anyone could ever have imagined.