An untalented female high school student traveled through time, disguised herself as a man and entered the deep palace. She met a cold-blooded prince and became her friend. From the bloody storm to the peaceful and prosperous age, she grew up along the way, from being an unskilled companion to playing music, chess, calligraphy and painting. She learned to be free, but she was also hurt by the conspiracy, but she still loves her for a long time.