Hwang Jun Su

To repay her biological parents for giving her life, Sin Seo-yeon leaves behind the wealthy Sin family and returns to her birth family, the powerful Kims. However, her parents and brother only care about their adopted daughter, Kim Ye-rim, who frames Seo-yeon and has her imprisoned for three years. After her release, Seo-yeon cuts ties with the cold-hearted Kim family at Ye-rim's birthday party—only to be relentlessly bullied by them. Just then, someone steps in to save her..

18 years ago, Kim Su-yeon's grandmother abandoned her after forcing her to donate blood to her twin brother, Kim Hyeon-woo, whom she favors. Rescued and raised as Choi Ji-seon, she grows up in hardship. As an adult, she unknowingly returns to her birth family’s company. There, she faces humiliation while an imposter steals her identity. When the truth is exposed, she reclaims her place, and the fractured family finally reunites.