I just went on a trip, and in my sleep I came to the war-torn era of the late Sui Dynasty. I have always held the attitude of "I would rather believe that it exists than that it doesn't exist" when it comes to "time travel". But if this happened to me, I couldn't believe it. In this era that does not belong to her, she is truly alone, with no home, no relatives, no friends, no beliefs, and no ideals! Like a lonely soul in the vast universe. But she encountered the destined love disaster. How should she choose with a little knowledge of history? How to make a living for yourself and the future? How can she survive? Where should she go from here?