In a strange twist of fate, Harper Lacy, a fiercely independent teenager who refuses to let her cerebral palsy define her life, gets pulled out of DC into a strange otherworld called Emberfall. She meets Rhen, a “boy prince”, cursed by an enchantress thanks to his careless actions and doomed to an endless cycle of reliving the autumn season of his 18th year and turning into a beast at the end of each autumn. Unless he finds the right girl to fall in love with him…