Mary Thorburn disguised herself as a man. Exposed, she faces execution. At the last moment, a modern woman transmigrates into her body and gains a system that assigns only one mission—become the empress. With a system item, Mary hides her feminine traits and makes a prophecy, which convinces Grant Redgrave to spare her. Three days later, she makes the prophecy come true with her cunning and wit. From there, Mary tries her best to survive and complete the mission.
