Ning Wan never thought that a nap would involve her in the mystery of life and death in two worlds.
That day, the system failed and she entered a strange novel and became the legitimate daughter of the Ning family with the same name as herself. When he woke up, he was surrounded by beautiful buildings and a ruthless regent. She thought it was a dream, so she let herself go - she talked back, threw the inkstone, and almost hit his head. But the regent didn't punish her, and instead looked at her with something indescribable.
A few days later, the system was repaired and Ning Wan was bounced back to reality. When she woke up in the morning, she just thought it was a dream and quickly put it behind her.
But that world was completely out of control.
After she left, the regent married "Ning Wan" with the same name, but after the marriage he found that she was not the same person as those days. The day after day of disappointment and paranoia pushed him into the abyss. He turned evil ten years in advance, bloodbathed the court, and beheaded the entire Ning family - including the innocent "Ning Wan".
But that "Ning Wan" was reborn. The first time he attacked the Regent, he failed and was defeated by Ling Chi. He tried to escape for the second time, but was still captured and the entire clan was destroyed. After two disastrous defeats, the system was almost wiped out.
In a desperate situation, the system used its last bit of energy to cross the world barrier and re-lock Ning Wan in reality.
"Ding, the host has been re-bound. Mission: Return to the book and prevent the regent from turning dark."
This time, Ning Wan is no longer a passerby. She must step into that unrecognizable world and face a regent who loves her to the point of madness and hates her to the bone. And she only has one chance - because if she fails again, everything in the book will never exist again, including herself.