The moonlight is like tears, shining on the glass windows of the Tavern of the Dead. Ye Yao, a mysterious singer who heals the souls of the dead with his singing, wanders in the gap between the underworld and the human world. Her music can awaken forgotten memories and soothe the deepest resentments. However, the magic of the singing is gradually fading, and the undead gathered in the tavern are becoming more and more restless due to unresolved obsessions. Ye Yao is eager to rescue them, and even more eager to find his lost melody and the truth of his past life. She had to play the "returning ballad" on the night when the moonlight was at its strongest, but found that the stories of each deceased soul were like fragments, pieced together into the maze of her destiny. Can the natural sounds of the Tavern of the Dead penetrate sadness and awaken the forgotten self? In the intertwining of confusion and redemption, Ye Yao's journey is like a poem under the moonlight, which is both an ending and a new life.