Hong Gye-Dong is a genius physician with mystical eyes who can see people's names and insides. But "he" is actually a woman.

One day, due to unavoidable circumstances, she was caught paying the alcohol price for a man she thought as some rich young man.

She becomes entangled with this dangerous man whom she can't see his name nor his insides. The man who she thought just a rich guy is the Emperor?!