A middle-aged gay man in Washington, D. C., Carter Page III (Woody Harrelson), is a male escorta "walker"a single man who escorts other men's wives to social events, rather than their husbands. One of the women he escorts, Lynn Lockner (Kristin Scott Thomas), is the wife of a United States Senator and is having an affair with a lobbyist. When the lobbyist is murdered, she embroils Carter in an investigation that leads to the highest levels of the federal government.