Blinded in a car crash, 11-year-old Aisling is given an ancient harp inhabited by the spirit of 17th-century harper Blind Rory O'Cahan. She soon discovers that she can talk with Rory through the harp. Her skill attracts the attention of the Irish Fair Folk, who kidnap her to perform for them in the Otherworld until the end of time. Her 8-year-old brother, David, sets off to rescue her with the help of their father and Rory, the family Bean Sídhe, Her Above, and a member of the Hidden Folk of Iceland. Then she enters a life-changing harp competition.