At the end of the Northern Song Dynasty, the war was about to rise. Yelu Yun, a Khitan descendant, died in battle and was reborn, but was trapped in the body of a white dove. He hovered over Bianjing with the "wind messenger system" and witnessed the decay under the prosperity of the Song Dynasty; the Jurchen boy Wan Yanlie returned with the "Traveling System of Mountains and Rivers" and infiltrated the Song court as a gold envoy, hoping to pave the way for his homeland to move south.
An unexpected assassination forced the reborn members of the hostile nation to bind: Yeluyun, who was in the body of a dove, exchanged information for survival, secretly looking for opportunities for the Khitan's revival; Wanyan Lie, who was in the body of a dove, used the eyes of a dove to see the truth and accelerate the pace of knocking on the Central Plains.
They are aliens in troubled times, pawns on the chessboard, and the only "kind" of each other. When the alarm bell rings in Jingkang, and the iron horse crushes the moon shadow of Bianhe River, these twin souls, who are both enemies and friends, will eventually make a choice in the torrent of history - should they go with the flow, or use their little power to stir up the world?
