Siyeon Cha falls asleep grinding the hard mode of her favorite otome game, Daughter of the Duke's Super Love Project, and wakes up inside it as Penelope Eckhart, the story's despised adopted villainess. Every hard-mode route Siyeon remembers ends with Penelope dead, whether at her adoptive family's hands or a suitor's. To survive, she has to raise her standing with the game's love interests fast enough to dodge whichever ending is coming for her, all while playing the part of the Eckharts' least-loved daughter.