Three years after Zhou Sui, the eldest daughter of the Zhou family, suddenly died at her 20th birthday party, she miraculously comes back to life but loses her identity and memories. To uncover the truth behind her death and take revenge on the murderer lurking in the shadows, Zhou Sui conceals her sharp edge and bides her time. During this difficult search for the culprit, she gradually develops feelings for Huo Mian as they spend their days together, adding a touch of warmth to her cold path of revenge.