The soubrette Lucy is not cast for the main role in a "An Intimate Operetta", as she had hoped. She takes offence and decides to go back to her husband, Associate Professor Blahomrav Ducánek whom she had abandoned seven years before to be with her lover. Ducánek had come to terms with this a long time before and now only lives for his scientific work. He is trying to retrain a carnivorous plant to be a vegetarian. His work is a great success and so he invites his friend Potužník, a botanist and confirmed bachelor, to dinner. Lucy, who has burst in on Ducánek's quiet lifestyle, might cause a rift between the old friends so he decides to seek out her former lover, baron Studený, hoping that the latter will take her away with him. He has no idea that the banker Merhaut, a widower who has fallen in love with the soubrette, has been trying to find his wife. Even though Ducánek turns every situation into chaos, everything turns out well in the end. Merhaut asks for his wife's hand and Ducánek gleefully agrees to the marriage.

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Slavia Film