Mrs. O'Brien, newly rich, vainly aspires to social prominence, an ambition in which her common, chess-loving husband does not sympathize. Pretty Mary Ellen, the daughter, and a Japanese butler constitute the household. One day Mrs. O'Brien sends out invitations to a party which the Van Dusens and Van Astorbilts refuse to attend. While she is mourning this loss, an automobile breaks down in front of the house, and a slender young man who introduces himself as Lord Algernon Ste. Clair seeks refuge, while his car awaits the repairman. Mrs. O'Brien, scenting a noble match, promptly invites him to stay for the party. Meanwhile a rough-looking character alights from an automobile, and after a careful inspection of the house, rejoins his friends and disappears. An hour later, immaculately groomed, he enters the club of which O'Brien is a member, and finding the solitary old Irishman playing a lonesome game of chess, offers himself for partner.