The female protagonist awakens to find herself transformed into the cruel stepmother from a book. This unexpected twist is a result of her earlier act of kindness towards the grandmother of the male lead, which ultimately leads to her marriage with him and the role of stepmother to his son. She soon discovers that the original heroine had planned to seduce the male lead by slipping a sedative into his drink, but this plan is foiled when the protagonist intervenes. The female protagonist decides to ingratiate herself with the male lead after gaining insight from her knowledge of the narrative. However, her efforts are thwarted once again when she accidentally consumes a cup of coffee that has been tampered with by the secretary, leading to an intimate connection with the male lead.