Li Man, the widow of the Zhao State, entered the palace as a maid after her family was destroyed by the Qin army. She endured all kinds of hardships but still hid her love for her motherland. Because the Qin Palace was looking for a harp maid, she impressed the suspicious Qin Shihuang with a self-composed harp music that was full of grief, anger and nostalgia, and was appointed by the Liulantai Palace to play the harp. Although she was temporarily stable, she also started a road of revenge using the harp as a blade.