Disgraced by deceit, Kaya seeks vengeance through cruel seduction, targeting Aki, her betrayer’s sister. Under the guise of tutoring, she lures Aki into twisted intimacy, a web of domination and submission. Aki surrenders willingly, tempted by forbidden desire. Kaya’s cold revenge shifts with Aki’s innocent passion; hatred blurs into obsession as both fall deeper into a consuming, ambiguous affair.