A young woman, Lesbia (Norma Talmadge), who has a summer flirtation with a young doctor named John Rance (Antonio Moreno). She then throws him over. Later his best friend returns from a tour of the world with his new wife, the very same Lesbia.
To pick up material for his latest play, Kendall poses as a waiter at a fancy restaurant. In a twinkling, he gets mixed up with a gang of sinister foreign agents, who hope to get their hands on a noiseless explosive device
