On the eve of her marriage to George Hazelton, Frances has a great deal more on her mind than flowers and seating arrangements. The Connors and the Bainbridges, two families of American robber barons, have taken up residence in London, and their bitter rivalry is spilling over into the highest social circles. At the request of her brother, Alonzo, who is quite taken with Miss Madeline Connor, Frances has invited the Connor family to her wedding. Meanwhile, Frances's mother has invited Mr. Bainbridge, and Frances fears the wedding may end up being newspaper-worthy for all the wrong reasons.