Country girl Anne Maxwell is receiving lessons from choir master Karl Krona, who is secretly a German sympathiser.

"The Dingo" is a nickname for Harry Selby, a drunken thief from the city who loves animals and little children. He marries a country girl, Molly, despite knowing that she loves someone else, Dr John Stirling. Selby becomes passionately jealous of Stirling's attentions to Molly and is encouraged in this by Oily Allen.