Executed as the empire’s most notorious villainess, Duke’s daughter Alexandra inexplicably reincarnates as a harmless stray cat. She is taken in by Ophelia, a gentle daughter of a Marquis who endures relentless abuse from her own family. Touched by Ophelia’s unconditional love, Alexandra learns to cherish another human being for the very first time. However, disaster strikes: Ophelia is murdered through a ruthless betrayal orchestrated by her evil half-sister, Helena, and her fiancé, Third Prince Vincent. Seeking retribution, Alexandra throws her life away alongside her beloved master.

Yet death is not the end. Alexandra awakens once more—this time, transmigrated directly into Ophelia’s body one year before the tragedy!

“Ophelia, no matter what happens, I will guarantee your happiness!”

Determined to rewrite her savior’s tragic fate, Alexandra unleashes the formidable intellect, audacity, and cunning from her past life as a mastermind villainess. She systematically lays deadly traps for Helena and Prince Vincent. Along the way, Prince Christoph of the neighboring Bessel Kingdom approaches with plans to manipulate Ophelia for political gain—only to find himself completely captivated by the fierce soul dwelling within her.