Rayn is more than a Sea Witch, she's an Accumulator-a well of weather magic the powerful draw from. But when her power-hungry brother leads a coup and takes their family hostage, she enlists the help of her enemy to get her off of Boreal. Entering a treacherous magical land she knows about only from legends, Rayn battles monsters from within and without as she searches for acceptance. As she immerses herself into her enemy's world, her feelings for the Cosmic Witch, Kol, transform from icy hostility into a fiery passion that burns through every lie she's been told about his beautiful, dangerous world. But when she confronts her brother, Rayn faces an impossible choice-save her family or save her heart?