This was a once glorious dynasty, but it disappeared mysteriously, like air, without leaving any trace. The emperor loved the queen deeply but ruthlessly "killed" her after discovering his life experience. He deceived his son and let him live in his imagination, letting him Fighting together with himself, the queen who escaped from death plotted a shocking incident, while the princess and the general on the other side colluded to plot their affairs... Everyone weaved their own webs and the truth gradually became clear as the webs intertwined. Can the oaths once made across the sea be kept?