Based on

Movies like Luck and Pluck (1919)

Professional thief Joe Grim is killing time in New York City's Central Park before he robs the Wall Street subtreasury. He spots pretty young Laura White on a runaway horse. He manages to rescue her. Falling for her, he tries to steal a photo of her but is discovered and held at gunpoint by Laura's friend Countess Briand--who, unbeknownst to Laura, is actually the head of a German spy ring, among whose members if Laura's fiance Karl Richter. The countess convinces Joe to steal plane for a new airplane by telling Joe that they're papers that are being used to blackmail Laura. But things don't go exactly as planned.