Mrs. Ramsey sent Jean Oliver to prison on a false charge. To get even, Jean (disguised as Madame Mystera) plans to kidnap her daughter and turn her into a thief. Love entanglements with a gangster known as "The Fox" and newspaperman Grant complicate her plans.
Geoffrey is desperately in love with Mavis, who lives at his boardinghouse and is also pursuing a writing career. Unable to marry her because of his poverty, in his anger he curses God for abandoning him. Soon Geoffrey meets Prince Lucio de Rimanez, a wealthy, urbane gentleman who informs Geoffrey that he has inherited a fortune, but that he must place himself in the Prince's hands in order to enjoy the fruits of his inheritance. What Geoffrey doesn't know is that Prince Lucio is actually Satan.
The dashing but arrogant Prince Michael Fedor Lubimoff has to flee Tsarist Russia after falling into disgrace and settles in Monte Carlo, where he resumes his life of debauchery while World War I ravages the fields of Europe… (Partially lost film; reels 3 and 9 of a total of 11 are missing.)
