A person from the world is vulgar; a son of a wealthy businessman is a traitor; in a political marriage, she doesn't want to be used as a pawn. She agreed to the marriage out of impulsiveness and fun. Unexpectedly, as soon as she entered the house, she discovered that she seemed to have killed a noble concubine, but she had no memory of it at all.
In order to find out the cause of his mother's death, he stayed away from the court, but the investigation for many years yielded no results. Little did he know that the key person was not far away, but right in front of him, a marriage actually solved all the mysteries...