After An Lingrong committed suicide, he was reborn and returned to the day when he first entered the palace for the draft. Carrying the memory of all the palace secrets, knowledge of medicines, and human weaknesses in her previous life, she is determined not to follow the same old path. But her goal is not revenge or competition for favor, but to use the "information gap" to become an indispensable "invisible hub" for the harem. Under the premise of protecting herself, she secretly corrects the tragedy, but finds that she has gradually become the unexpected "variable" in all chess games.
