Expecting to die soon or to go insane, Sir Oliver Holt disappears into the London slums intending to commit suicide; but he is dissuaded by Glad, a cheerful girl whose sweetheart (a burglar called "The Dandy") Sir Oliver has sent to obtain money from his safe. The Dandy discovers Arthur Holt, Sir Oliver's nephew, already looting the safe; and he (The Dandy) is framed for the murder of a policeman.