Five diverse oddball criminal types planning a bank robbery rent rooms on a cul-de-sac from an octogenarian widow under the pretext that they are classical musicians.
To prove that he still is strong and powerful, Philippe Douvier decides to kill Clouseau. Once news of his "death" has been announced, Clouseau tries to take advantage of it and goes undercover with Cato to find out who tried to kill him.
In this comedy, set during the Nazi occupation of France, Peter Sellers plays most major male parts, so he stars in nearly every scene, always bumbling in inspector Clouseau-style. As British Major Robinson he is hidden in Madame Grenier's Parisian brothel, right under the nose of the Nazi clients, such as Gestapo agent Herr Schroeder (again him).