Single mother Ella brings her five-year-old daughter Mia along to a job interview and is hired by Lucian, the group's CEO, as both a jewelry designer and a live-in caregiver. Mother and daughter move into the manor, forming a makeshift family with Lucian and his nephew Noah. At work, she faces her supervisor's hostility, yet wins a major international deal through sheer ability. In daily life, the two grow closer while caring for the children together. Lucian searches for the woman he met six years ago — only to discover that she is Ella herself, and that Mia is his long-lost biological daughter. Ella refuses a marriage born of obligation and insists on her own career; Lucian learns to respect and stand by her, and at last the family of four finds its happiness.
