When Robin Locksley plans a masquerade for businesswoman and heiress Regina Mills, he just hopes to expand his client list. He gets much more when he takes his cousin's place as a guest at the party and makes a connection with one of the guests. The next day, he learns that person was in fact the hostess, Regina Mills, and that her mother has announced that Regina will marry whoever that man was. Robin's cousin Keith figures it out and convinces Robin to pretend that it was Keith who Regina met at the party. As Robin plans Regina and Keith's wedding, he gets to know her much better and falls for her himself. Will he reveal the truth or watch the love of his life walk down the aisle to his cousin?