Yin Mi is a professional killer in disguise in modern times. He has been burdened with a lot of darkness, suffering and hatred since he was a child, so he is cold and cruel by nature.
During the execution of another mission, he was brutally punished because he had the idea of betraying his master. His soul traveled to another time and space and possessed the princess at that time.
Thus began her journey into darkness in different time and space. . .