The rich and wealthy aristocrat socialité bachelor Dick Mainwaring falls in love with a beautiful woman from a lower class, Tilly Welwyn, whose mother owns a boarding house. Their backgrounds give rise to problems. Dick is discouraged and behaves like a complete snob towards the hard working mother, but then he learns of the good side of their life. Dick brings Tilly to his family's mansion in the country over the weekend. The visit starts out badly, since his mother, Lady Marion, strongly disapproves with the couple's union. The mother tries to split the couple up, but they are aided by the cunning butler, Samuel Stillbottle. Ultimately their love grows stronger as they overcome their differences, and romance pull the longer straw in the end.