When eight-year-old Andrew Finnegan's family is murdered in their home in Derry City of Northern Ireland in 1958, Aunt Eibhln brings him home to live with her. While growing up in her Bureen Woods home, Andrew and his aunt form a special and lasting bond the ability to communicate telepathically. Now, decades later, Andrew has failed to reach his aunt through their mental communication. He fears that she may be in danger. With his wife, Colleen, and their great-niece Aisling, Andrew leaves his beloved Big Horn Mountains in Montana and travels to Ireland to search for his aunt. Through this journey, he retraces the steps of his own history. During this mystical and dangerous mission of discovery, their path is illuminated with the help of Crow Indian medicine men, Irish travelers, a priest, and several other unlikely guides. Clues from Andrews's life and the exploits of the mysterious MacCumhaill prove vital to the quest to find Aunt Eibhln. But Andrew is not the only one searching for his aunt, and the past and present suddenly collide and put the group in great peril.
