'If you have a Wild, Unruly, or Undisciplined Daugher, two Ladies of Genteel Birth offer to Bring Out said Daughter and Refine what may have seemed Unrefinable. We can make the Best of the Worst'. When Amy and Effie Tribble, two charming but impoverished spinster sisters, lose out on an inheritance, they place this advertisement in "The Morning Post" and hire themselves out as professional chaperones. Vowing to prepare even the most difficult misses for marriage, the Tribble sisters will spend a London season on each client, educating them in their School for Manners. Fiona has been sent to them by her guardians as a last resort, for at nineteen, the beautiful and wealthy Scottish heiress still has no prospect of a suitable marriage. The Tribbles are puzzled, however, by their charge's demure perfection, until they take her to her first ball - and discover she is an incorrigible flirt! And when quizzed by the Tribbles, Fiona betrays her real feelings ...so the sisters are forced to confront the truth about her past!