Ireland, 1911 - After encountering a faery in the woodlands near his home when he was child, Professor Emmet Brehon spends his life pursuing the belief that faeries were more than just elements of mythology. While teaching Irish mythology and folklore at a university in Dublin, he receives a note from a stranger who claims to know where the faeries can be found. Following the map that the stranger gives him, Emmet travels to a faerie circle and mound near Lough Leane in Kerry where he encounters two ghostly little girls and a faery light. Snapping a photograph of the girls and faery light with his Brownie camera, Emmet's life becomes twisted when he discovers that he can't rid himself of the photograph and disasters occur whenever he is present. He soon loses all in life that it is precious to him, including his sanity.