Lin Qingyin, a modern professor of music psychology, transmigrates into the body of Lin Qingyin, a mistreated concubine-born daughter in the prime minister's household. She discovers that in this world, music can actually channel the power of heaven and earth. Drawing on her modern knowledge of music, she wields melody like a blade, navigating household rivalries, court politics, and the martial world one step at a time. From a good-for-nothing concubine-born daughter whose engagement was broken off, to a musical prodigy whose performance stuns the capital, and finally a legendary woman who brings peace to the realm through music, she composes more than melodies: she orchestrates her own destiny.