Literary agent (and inveterate singleton) Catherine Gainsborough had no plans to change her way of life. Until, that is, she met her former classmate Melanie at a literary conference.

Melanie, beaming with happiness, tells Catherine that she uses the services of an exclusive agency, which provides its clients with a partner to satisfy their every desire. At first, Catherine is outraged by the idea. Finally, however, curiosity prevails, and she accepts her friend's offer of membership in this mysterious organization.