A clumsy first love, stained by rumors and misunderstandings, left only deep scars. Ten years later, Doseok reappears in the life of Seulha, a workaholic who has kept everyone at a distance. To make matters worse, he becomes her unavoidable boss. Doseok has changed completely, and a strange, precarious contractual relationship begins between them. "This time, it's my turn to ruin you." A dangerous, public office romance begins under the guise of revenge. However, contrary to his cold warnings, Doseok's intense gaze and persistent touch awaken the deep, suppressed desires within Seulha. The thin tension of their daytime relationship turns into an inescapable, heated entanglement at night. The two, who initially approached each other to tear one another down, gradually begin to soothe each other's deep scars, falling into an uncontrollable ecstasy. A thrilling mutual salvation between two wounded souls who desperately want to push each other away while simultaneously craving each other. Their unfinished, broken first love crosses a ten-year gap, blossoming anew into a sensual, fatal, and sweet adult romance.