Paul Craig (Arthur Shirley) is an aviator-inventor who becomes blind due to overwork. He stumbles into a room as a person is being killed by foreign agents – who decide to let Craig live because he cannot identify them. The murder is part of a plot to overthrow the monarchy of fictional Ruvania. Paul regains his sight and marries Angela (Grace Glover), whose brother was killed by the gang, and who is the ward of Carlo Gelmini (George Bryant), head of the gang. Angela lost her memory with the shock of her brother's death but manages to recover it and help Paul save Ruvania.
Jack Maxwell, a young ne'er-do-well, is disowned by his wealthy father after a raucous party, and goes to work at a mill in the North Coast timber district owned by his friend Dick Desmond.
Mary Garval is forced by poverty into posing semi-nude for a painting, L'Environment. The painter's assistant, Arthur, tries to seduce her but she runs away after finding out he is married.
A mother discovers her daughter Susan is marrying an insufferable social-climber. Already horrified by the idea, she also finds out her son Martin has gone into a life of crime. She decides to head to Paris to forget about her domestic troubles. She marries Richard Elliot, the executor of her late husband's estate.
Harold Wilson inherits a map showing the location of a hoard of diamonds. He sets out to find them with Howard Morrison and his wife. On a lonely stretch of the coast they meet Ruth Jeffries and her father, a fugitive from the police, who has the diamonds. Howard steals the diamonds, kills Jeffries, abducts Ruth, and puts Harold and his wife in an open boat out to sea. Mrs Morrison dies but Harold is rescued. He tracks down Ruth, saves her from Howard - who has discovered the diamonds are worthless - and marries Ruth.