A senior otaku in the 21st century travels through the Lin Kingdom that has no records in ancient history books. Smuggled into the palace and became a slave.
At the same time, she also discovered that there was a big conspiracy behind the high wall. Suddenly from a slave to a maid. Originally, she simply thought that she would grow old and die in the palace in this life, but unexpectedly discovered that there was an unknown secret behind the conspiracy. While delving into secrets, she fights for the truth.