The Kroes family mistakenly raised the wrong daughter. When Rianne, the true daughter, was found and brought back, she was used as a pawn to marry the heir of the Palmer family. Initially intending to refuse, she couldn't help but agree upon seeing his face.

"Mark, I truly love you."

Her feigned affection almost deceived even herself.

The man looked at her with an equally affectionate gaze, yet it seemed as if he was seeing another person through her. They both treated each other as substitutes for unattainable love.

But who could have foreseen that these stand-ins would develop real feelings? When the man's true nature was revealed, and his beloved’s image shattered, the two finally came together.

"A substitute? Only those who are not loved are substitutes."