Hitler and Goering are due to visit the area. General Von Klinkerhoffen plans to have them assassinated. It turns out that the two German dignitaries are, in fact, impostors sent to the area as decoys. Helga plans to smuggle dynamite into the prison... (more) where Herr Flick and Von Smallhausen are being held. The dynamite ends up on the lunch table and blows up the two fake German dictators. Colonel Von Strohm and Lieutenant Gruber are ordered to continue the impersonation of Hitler and Goering. Meanwile, Mimi is planning to assassinate the supposed German leaders.