Margot Le Blanc loses her small fortune at Monte Carlo in Monaco and makes the acquaintance of Hugh Kildair, an artist, who hires her as a housekeeper. A gang of thieves set a trap for Kildair when they find that he knows a mathematical system guaranteed to win at the gambling table. The gang is foiled by the arrival of the police; and Kildair, realizing he has fallen in love with Margot, marries her.