Harry Sinclair is one of England's best secret agents, a man who knows no fear. However, the doors of high society are forever closed to him - after all, he is the son of a simple actor. When Harry was ordered to seduce the daughter of an aristocrat suspected of espionage, he had no choice but to become one of the counts and dukes. Harry inherited the talent for impersonation from his father, and therefore he feels confident in any environment. But he doesn’t like deceiving the gullible Maria at all. After all, every secret meeting can destroy an innocent girl, and Harry does not want to expose the one who has become dearer to him than life...