Loiseau the pharmacist mistakenly mixes potassium cyanide into a batch of cough syrup and sells five bottles. With horror he discovers his mistake and sets out to find the buyers. He finds only four. The fifth, not a regular customer, comes back to the pharmacy...
Théodora, Thierry de Villiers' governess, has the leisure of scrambling the cards: She combines the meeting in the same apartment of Thierry, his friend Octave, Brigitte, his wife, and Nicole, Villiers' secretary. Finally, Theodora will be sent back to the asylum from which she had run away.
Rémi sees his marriage troubled by a scandal caused by his former mistress. He takes refuge with his godmother while his wife organizes her revenge.
