At thirty one, Han Yujoo is left with nothing but the aftermath of betrayal. Her engagement ends without warning, her closest friend disappears from her life, and the future she trusted crumbles quietly around her. Stuck in a career that barely acknowledges her existence, Yujoo learns what it means to be replaceable - at work, in love, and in life.

Goh Taei is everything she is not: admired, untouchable, endlessly desired. Yet beneath the attention and manufactured perfection lies a man unraveling, carrying a secret that places an expiration date on everything he has built. When he makes Yujoo an offer stripped of pretense and honesty, she is forced to confront her own buried hunger—for recognition, control, and something that feels like victory.

What begins as mutual use spirals into something far more dangerous. Desire becomes leverage. Affection turns into possession. As ambition and emotion tangle together, Yujoo must face an unsettling truth: salvation and ruin may be the same thing, and greed might be the only way she survives.