"Heart of the Fae" is the first book in the "Otherworld" series, which follows Corinne, a woman who is kidnapped by a fae prince named Fenris. To save her sister and her village from a curse, Corinne must navigate the dangerous and magical realm of the fae while dealing with the complex political tensions between the Seelie and Unseelie courts. As she and Fenris are forced into an uneasy alliance, they must confront the growing threat of a dark power that endangers both their worlds.