When fifty million baht is the price of freedom, Pimrada, a devoted daughter, has no choice but to offer herself to save her father from prison.
With a stroke of a pen, she signs her life away to become a "debt-collateral wife" to Metinee, an influential female Alpha and heir to a prestigious clan—a woman who sees her as nothing more than a stain born of the vengeance she holds against Pimrada's father.
Trapped within a luxurious mansion that serves as a gilded cage, Metinee erects walls of hatred and ruthlessly tramples upon Pimrada’s dignity without a shred of mercy. Yet, the crueler she becomes, the closer they are drawn together. Primal instincts and the tender fragrance of a "Fated Pair" slowly begin to melt the ice around the Alpha's heart, little by little.
However... just as love begins to bloom, malicious schemes and misunderstandings shatter everything to the ground.
Pimrada chooses to vanish, carrying a secret within her womb, leaving Metinee to drown in the agonizing truth that... she has destroyed her own heart with her own hands.
From a creditor consumed by revenge to a debtor of the heart who must beg for forgiveness. How will the conclusion of this deceptive marriage unfold, when the debt of vengeance is paid in full, but the debt of love remains bound for eternity?