Ye Zixin accidentally broke into an era that was not recorded in history books. While the children in the 21st century were watching the time-travel drama, she returned to the past as if in a dream. God, even if we can go back to that terrible Qin Dynasty! At least you can know how history developed. But now, she doesn't know her own ending or the ending of others.
In this era when there was only one prince, there was no competition for the throne, no wars and chaos. It wasn't until the end that she realized that she had gone back to the past just to witness and protect the only prince among people and among thousands of people, and that the one who loved her, the one he loved, had disappeared forever...
Where is the person who once traded his life for her?