Olivia, a maid, raises her daughter Sara on her own. By chance, an elderly duke recognizes that Sara bears the bloodline of the Green family. Adrian, Duke of Green, falls deeply in love with Olivia as they spend time together, unaware that she is Sara’s biological mother. Torn between Sara’s birth mother and Olivia, Adrian struggles with his choice, until he realizes the two are one and the same. The pair confess their true feelings for one another and survive murder plots devised by the fake heiress Anna. It is later uncovered that Olivia is the genuine heiress of the Lopez family. Having gained both love and friendship, Olivia gives birth to triplets.
