"An Offer From a Gentleman" puts the second Bridgerton son, Benedict, at the center of the story. After meeting a mysterious lady at a masked ball, Benedict Bridgerton is in love. He insists he will not marry until he can find his mystery lady and sweep her off her feet. What he doesn't know is that the woman behind the mask is right under his nose.
Sophie Beckett, the illegitimate daughter of an earl, is mistreated by her stepmother and stepsisters. She sneaks out incognito for one glorious night at the famed Bridgerton ball, but when her stepmother finds out what she's done, she's cast out. Fortunately, she finds employment as a maid in the Bridgerton household.
Despite her best efforts, she grows close to Benedict and the others, but Benedict struggles to reconcile his growing feelings for Sophie with his vow to his mystery lady.