Synopsis：Taken in as the Karen family’s adopted daughter, Melissa is tormented by Ollie, the biological daughter who has just returned and turned all three brothers against her. Enduring humiliation and abuse in silence, Melissa secretly joins a dangerous drug trial to cure the hereditary illness haunting their bloodline. When CCTV footage exposes the truth, the brothers are shattered, and Ollie is killed by the very disease she used as a weapon. As her siblings fall one by one, Melissa rises from victim to queen, claiming the top seat and offering salvation on her own terms.