The Premise of I Raised His Mistress's Daughter
The Sacrifice That Cost Mi-rae Everything
Eight years prior, Song Mi-rae saved Kwon Woo-jin's life, a choice that left her infertile. She concealed her status as the Origin Group heiress to remain in the marriage, dedicating herself to a partnership built on a hidden foundation. The personal cost of that rescue defines her starting position, stripping away the possibility of a biological legacy she might have claimed.
Seven Years Raising Ji-an
When the couple adopted Ji-an, Mi-rae poured seven years into mothering the girl as her own. That daily care created a bond Mi-rae believed was legitimate, anchoring her emotional life to the child. The narrative hinges on the contrast between those years of nurturing and the revelation that shatters the adoption's premise, turning maternal devotion into the weapon of a deception.
The Mistress and the Illegitimate Truth
Mi-rae learns Ji-an is Woo-jin's biological daughter with Han Chae-won, his mistress. The adoption was not a joint act of family building but a scheme to legitimize the affair's offspring. Stripped of her marriage, her heiress standing, and the child she raised, Mi-rae pivots to vengeance. The premise positions her to dismantle the lie and reclaim the Origin Group birthright she suppressed.