In a time of great war, two Irish teens become the heirs to an ancient prophecy--and must fend for their lives in a battle between realms. 1924, Ireland Dragged from Dublin to live with distant family in the countryside, fifteen-year-old Virginia is out of her depth. But when a great beast chases her into a strange world underground, she'll need to forge new allies and bold schemes to stay alive in a kingdom of cruel fairies, warrior leprechauns, and mercurial gods. At seventeen, Connell is reeling from the death of his soldier brother and falling for the new girl in town. When Virginia disappears, Connell is the only one who knows where she's gone, and soon finds himself apprenticed to a legendary hero, tasked with saving a realm--and fulfilling a destiny--he barely understands. Intricately woven with Irish mythology, this thrilling YA fantasy debut transports readers to Otherworld, where two human teens become unwitting pawns in a dangerous game between gods and men.