Synopsis：Six years ago, brilliant lawyer Madeline met wealthy heir Nicholas at a masquerade party and later gave birth to their bright daughter, Isla. For the sake of money and status, her half-sister Vivienne stole Madeline’s keepsake and impersonated Nicholas’s lover. By fate, Madeline joins Nicholas’s company, and they reunite amid office schemes and looming threats, where old feelings begin to stir again. Clues from a rare hereditary disease and an identical birthmark gradually reveal the truth, exposing Vivienne’s deception and clearing years of misunderstanding. In the end, Madeline and Nicholas choose each other, and the three of them finally embrace a hard‑won, happy life together.