While restoring an ancient guqin, modern-day restorer Su Yin touches it and unexpectedly travels back in spirit to the Tianbao era of the High Tang. She meets the male lead through the instrument, and the two are drawn together by the resonance of their music. In the past, Su Yin sees the guqin as it was before restoration and discovers a shocking secret. Xiao Rong uses court music theory to help her unravel the mysteries of its ancient melodies, and as their playing harmonizes, feelings begin to stir between them. One melody triggers a secret art hidden within the guqin... In a world of stillness, she awakens in a faint glow and returns to the modern restoration studio. The guqin in her hands is restored to its original condition, with only a single strand of its strings wrapped around her fingertip. But what will become of them in the end...?
