Yan Xi is the eldest daughter of the Yan family, the foremost of Beiqiao City's four great families.
Brilliant and dazzling, yet frail and sickly, she is doomed to die young and is the untouchable white moonlight in many people's hearts.
One day, she dreams that the world she lives in is a novel.
In the novel, to soothe the pain of losing his wife and soon his daughter, her father adopts a girl who looks very much like her, Chen Xiangxiang.
The girl is as gentle as a fawn, yet especially comforting, and even more worthy of people's sympathy than Yan Xi.
After using the girl as Yan Xi's stand-in for a while and putting her through all kinds of heart-wrenching trials, everyone comes to their senses. Her father, brothers, fiance, and friends all dote on the girl to no end.
Meanwhile, Yan Xi, the damned white moonlight who stubbornly refuses to die, keeps opposing the girl at every turn and becomes a vicious supporting villain.
In the end, everyone despises and spits on her. After being set up and disfigured with sulfuric acid, she jumps to her death. Even after she dies, she leaves behind a huge inheritance for the girl to claim.
Yan Xi, who feels guilty for failing to save her mother and has come to terms with life and death: ...
Suddenly, she doesn't want to die anymore!
She tears up the white-moonlight script and decides to stay away from this bunch of lunatics. She'll focus on scientific research, music, and investments, reveal her secret identities while taking down scumbags, and do everything she can to live longer than anyone else so no one can lay a hand on her fortune!
While taking down scumbags, she happens to protect a refined, aloof young man, only to discover that he, too, is a big shot with plenty of secret identities.