Hudson Hopper is in some trouble. After doing his business partner, Jude, a favor by hiring his younger sister, Sloane, Hudson very quickly finds out that she is a massive distraction―especially since she's now his assistant.

But when they are confronted with a situation where Sloane is told to fill in as a bridesmaid for one of Hudson's business partners, she comes up with an equal trade. She'll be a part of the regency wedding--corset and all--if Hudson marries her. Sloane knows the value of the trade, he needs her, and she needs his wedding ring to get her into a high-society club that will further her career. 

It's an instant no from Hudson at first, but when she convinces him that no one will find out, including her brother, and he will benefit from the marriage too . . . well, Hudson finds himself saying "I do."