In the year 1825, in a remote valley lying between the mountains of south-west Ireland, near the Flesk river of Killarney, three women are brought together by strange and troubling events.
Nòra Leahy has lost her daughter and her husband and is now burdened with the care of her four-year-old grandson, Micheal. The boy cannot walk, or speak, and Nora, mistrustful of the tongues of gossips, has kept the child hidden from those who might see in his deformity evidence of otherworldly interference.
Unable to care for the child alone, Nora hires a fourteen-year-old servant girl, Mary, who soon hears the whispers in the valley about the blasted creature causing grief to fall upon the widow's house.
Alone, hedged in by rumour, Mary and her mistress seek out the only person in the valley who might be able to help Micheal. For although her neighbours are wary of her, it is said the old Nance Roche has the knowledge. That she consorts with Them, the Good People. And that only she can return those whom they have taken.