Orphaned, Lee Na Gyeom spent 20 years at Seowon Group with heirs Seo Do Hyun and Seo Ian. Everything changed when Han Yoo Ra arrived. Her schemes destroyed Lee Na Gyeom; the deceived brothers drifted apart. Heartbroken, like the moon that lost its light, she left with CHA IHYUN. Too late, the brothers learned the truth and regretted it. She married him, reclaimed herself, and started a peaceful new life.