Oh My Proud Heiress! summary introduces us to Yvette Harris, who finds herself getting cheated on by her fiancé Brandon. So she drunkenly has a one-night stand with a stranger who turns out to be Brandon's uncle, Edward Campbell, who doesn't want Yvette to marry Brandon.
The age gap romance makes Yvette and Edward's relationship a secret as Yvette plans to expose Brandon's lies.