When Su Wan was six, she met Shen Ci in the cherry grove. A year later, she chased a butterfly and vanished into a rift, leaving Shen Ci half a sleeve and a chess piece that had not yet fallen.
Sixteen years later, Shen Ci finally found her. She had become the icy master of Cherry Fragrance Valley, wielding the zither as a weapon and killing without a trace. The flute in his hands just happened to be the key to undoing it all.
The zither's killing meets the flute's counter, and only then can the endgame be solved. Their fates begin and end within this game.