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Brother George (Walter Chiari) is the Italian monk who is the only one who knows the secret recipe of a popular liqueur. When he feels the local wine merchant won't give him a fair price, he moves to Australia. He meets Alfredo Brazzi (Jack Albertson) and the two agree to a partnership to make the liqueur. Alfredo is unaware George is a monk and that he sends 50% of the money back to his Italian monastery. Alfredo and his son-in-law Tim (Dave Allen) constantly try to steal the secret recipe. They recruit June (Rowena Wallace) for their underhanded cause, but she falls in love with George, also unaware of his religious calling. Finally, the Italian wine merchant travels to Sydney, willing to make a deal with Brother George. The merchant ends up paying double the price he had previously rejected in this amusing comedy.