Katie Bartlett's mother is driving her crazy, and she'll do whatever it takes to get her wedding-obsessed mother off her back. Thanks to a joking comment from her best friend, David, Katie decides she to have a fake wedding, to a fake groom—the Invisible Man. David Williams has been Katie's best friend since kindergarten. He knows Katie doesn't see him as anything more, but the further she gets into planning her wedding to another man—albeit a fictional one—the worse he feels. With the wedding underway will Katie finally realize the Invisible Man is David?