Iris Bennington is furious when she discovers her younger brother is following the instructions found in the acclaimed advice columns on How to be a Gentleman. The so-called “advice” is more likely to turn her brother into a scoundrel than a true gentleman. Iris decides to locate the author of the columns and confront him. Merritt Steel, the Earl of Ashby, cannot help but be amused by the slip of a woman who comes calling. Unwilling to let such a delightful potential conquest go, he proposes a wager: bring him anyone off the street and he can pass them off as a gentleman. It’s a bargain she readily accepts—but with a twist. Their bargain proves to be a greater challenge than either anticipated. Merritt finds it near impossible to keep his hands off Iris, and she begins to see the undeniable appeal of ungentlemanly behavior…

Harriet Wheatley is the mastermind behind the Ladies of Virtue's quest to rehabilitate the gentlemen of the ton. So when it comes to selecting her own target, she knows who to choose: Oliver Weeks, Marquess of Davenport—the most extravagant wastrel in all of London. Known for his opulent lifestyle, Oliver isn't surprised by Harriet's confrontation. It's obvious Harriet longs for any way to take him down a notch. She says she'll help him find a bride, but he knows it's only because it gives her the excuse to chastise his indulgent ways. Oliver has good reason for his flagrant overspending, but Harriet will hear nothing of it. So he has no choice but to teach the lady a lesson, even if it means risking his heart to the hard-headed and fiery woman.

Rakish playboy, Fletcher Banks, Earl of Wakefield has wanted Agnes Watkins since the first time he saw her. But her older brother is his direct supervisor and makes it very clear that Agnes is off limits. Fletcher does his best to forget her and instead focuses on his spying assignments that have him seducing women for needed information. But when Agnes corners him at a ball and proclaims she’s going to reform his scoundrel ways, Fletcher knows he can ignore her no longer. Initially he considers this an opportunity to rid himself of his fascination with her. But the more time he spends with her, the more he realizes that what he feels for her isn’t a passing infatuation, but real love. He uses her goal as an excuse to pursue her full throttle despite warning glances from her brother. But can he convince her that he’s mended his scandalous ways?

As a Lady of Virtue, Matilda Brooks swears to reform the most despicable man of her acquaintance, her brother-in-law, Sullivan Chase, Viscount Glenbrook. Well, he may not be the most despicable, but he is certainly arrogant, flirtatious, and entirely too charming. To make matters worse, he has the irritating tendency to poke fun of her and rile her emotions as no other man does. However, when she confronts him, he laughs off her concern about his slothful ways. But when a carriage accident forces Sullivan to play knight to Tilly’s damsel, his unexpected act of chivalry ends up costing them both their freedom. Her compromised reputation and his honorable declaration forces them into a marriage neither of them wants. Which is most inconvenient, given that she has sworn to despise him forever.