Sophie Trevelian, the daughter of a provincial vicar, is visiting London with her wealthy aunt. While walking in the park, Sophie meets Max Harkot, who in society is called “the stern duke” for his coldness. Max immediately understood that Miss Trevelian is far from ordinary. Her openness and thirst for life awaken in him an irresistible attraction. When he learns that Sophie is a talented artist, Harkot offers to accompany her to an exhibition at the Royal Academy. The duke’s appearance in society with a young stranger goes unnoticed. Baron Wivenhow, wanting to take revenge on an old rival for old grievances, tries to insult the girl. And then, unexpectedly for himself, Max declares aloud that Sophie is his fiancée…