Li Sitian accidentally fell into the time tunnel during a field game in the countryside and traveled to Nanjing in 1936. She experienced the Massacre, a very turbulent and cruel era. These experiences transformed her from an arrogant, brutal and willful person into a gentle, considerate, passionate young man who loves her country and her people!
By chance, she was forced to be a spy. In order to survive, she had to use modern thinking and methods to solve problems. Fortunately, she was able to avoid danger every time. But it was fate that she met Ye Hong, a traitor that all Chinese people wanted to hate. Sitian fell in love with him against all odds, but unfortunately, just when she was intoxicated with happiness, she learned that she was about to disappear into this space. In the end, Ye Hong sacrificed himself to save her. Bring her back to modern times....