Herr Flick and Von Smallhausen of the Gestapo plan to infiltrate the Resistance disguised as British airmen. So do the Italians, led by Captain Bertorelli. Little do they know that Rene and friends are waiting for them, heavily disguised. Little does Boris Karloff know that his former make-up artist is now working for the Resistance....

When the British airmen are arrested paddling a tin bath down the estuary, Rene and his staff are instructed to rescue them from the chateau in coffins. All goes to plan until M Alfonse challenges M Leclerc to a duel....