Detailed summary: Nicias and Demosthenes run from a house in Athens, complaining of a beating that they have just received from their master, Demos, and cursing their fellow slave, Cleon, as the cause of their troubles. They inform the audience that Cleon has wheedled his way into Demos's confidence and they accuse him of misusing his privileged position for the purpose of extortion and corruption. They advise us that even the mask-makers are afraid of Cleon and not one of them could be persuaded to make a caricature of him for this play. They assure us however that we are clever enough to recognize him even without a mask. Having no idea how to solve their problems, they pilfer some wine from the house, the taste of which inspires them to an even bolder theft – a set of oracles that Cleon has always refused to let anyone else see. On reading these stolen oracles, they learn that Cleon is one of several peddlers destined to rule the polis and that it is his fate to be replaced by a sausage seller. As chance would have it, a sausage seller passes by at that very moment, carrying a portable kitchen. Demosthenes informs him of his destiny. The sausage seller is not convinced at first but Demosthenes points out the myriads of people in the theatre and he assures him that his skills with sausages are all that is needed to govern them. Cleon's suspicions meanwhile have been aroused and he rushes from the house in search of trouble. He immediately finds an empty wine bowl and he loudly accuses the others of treason. Demosthenes calls upon the knights of Athens for assistance and a Chorus of them charges into the theatre. They converge on Cleon in military formation under instructions from their leader: