The piano master who lives in seclusion in the mountains often plays the strings by the river on summer nights, and the sound of the piano flows through the bamboo forest with the evening wind. He had closed his heart due to past obsessions, but it wasn't until he met a girl who burst into his life like a firefly that ripples appeared in the silent lake of his heart. There are mountains, moon and starlight hidden in the eyes, and the fingertips have both the warmth of the music and the unspeakable vicissitudes of life.