The Restless Shore. The Wilds

Join an elemental genie on an adventure through the wilds of the Realms-the Mere-That-Was-as she braves unimaginable horrors to rescue her sister One hundred years ago, the Akanamere was ravaged by the Spellplague, drying the lake and leaving behind a nightmarish landscape of frozen waves and distorted creatures. Chief among them is The Choir, a strange entity whose song drives its listeners to carry out what they believe are the singer's orders. When a genasi woman-a human elemental genie-is kidnapped by these fanatics, it falls to her twin sister, Ghaelya, to bring her home.
Aided by a troubled half-elf, a former military captain, and other foreign allies, Ghaelya braves the wilds of the Mere-That-Was, crossing plague-infested lands and dodging terrifying creatures, in her quest to save her and her sister from a gruesome fate.