Charlie advertises for a wife and arranges to meet widow Madeline Blue at a park gate, both wearing white roses. At the same time, the queen of the anarchists plans to meet a recruit under the same signal. Mistaken for the applicant, Charlie is dragged into the anarchists’ den and ordered to blow up a judge. Meanwhile, Madeline and her uncle are wrongly arrested as bomb-throwers when her true date proves to be a detective. After comic misadventures, Charlie escapes, reunites with Madeline, and sparks a romance.