Tom tells Brown, the real estate broker, that he won't have him as his best man unless he hastens to get him a tenant for his furnished apartment, and Brown rents it to Frenchman Jean Dupree, upon the condition that he may take possession of it at six o'clock. Brown reminds Tom of the bachelor dinner to be given in his honor that night. Tom instructs his valet to pack his belongings and engage rooms at a hotel. Dupree, his daughter and the maid arrive. Dupree goes to dress for dinner, and the maid admits the daughter's lover, poor artist Alfonse, whose suit is not approved by the old Frenchman. Dupree returns and, discovering Alfonse, promptly ejects him. After the bachelor dinner Tom forgets about having sub-let his apartment, goes home, enters the daughter's room, and begins to undress. Hearing voices, Dupree looms up in his night attire and demands that Tom marry his daughter the next day. Despite Tom's apologies and explanations, the Frenchman keeps him in the apartment, and the next morning he drags him to church. There Grace, her father, the minister, and the entire bridal party have been awaiting Tom's arrival. When he finally appears with Dupree and his daughter, trouble ensues. Meanwhile Jeannette tells the maid to get Alfonse. Dupree finally permits Jeannette to marry the man of her choice.
—Moving Picture World synopsis