Agnes, the tower keeper in the Scottish Highlands, always heard the sound of the harp on foggy days, and the melody could make the overgrown thorns blossom into white lilies of the valley. When the lost traveler Kane knocked on the tower door, she discovered that the ancient harp he was carrying was missing a string. Kane said that he was looking for the moonstone that could bring the harp back to life, and Agnes's grandmother had left a will: "When the harp rings, the person who stole your heartbeat will walk out of the fog." One full moon night, Kane played music with the strings woven from her hair, and a scene from a hundred years ago emerged in the fog - their ancestors were lovers who were separated due to family feud, and the sound of the piano that spanned centuries was an unfinished confession.
