 Behind enemy lines and accompanied by her black cat, X-27 disguises herself as a dimwitted peasant girl and gains employment as a chambermaid in the Russian officers' quarters.She quickly seduces a Russian senior officer, Colonel Kovrin, with liquor and sex play, and obtains the top secret plans for the attack, transliterating them into a musical composition for piano.Captain Kranau, who is stationed at the barracks, observes X-27's black cat stalking the hallway, alerting him to her presence.