The goddess Hera creates a ghost in all similar to Helen and sends it to Troy with Paride, while the true Helen is hidden by Hermes in Egypt as guest of King Proteus.
On the death of Proteus, the Teocliman son undermines Elena, who rejects him, partly because the sister of Teoclimeno, the priestess Teonoe (able to see the future), has predicted that he will see her husband Menelaus.
Elena is thinking of her sad fate when she sees the Greek messenger Teucro arrive.
After a long war, the city of Troy is defeated.
The Trojan men were slaughtered and the women assigned as slaves to the winners.
Cassandra is given to Agamemnon, Andromache to Neoptolemus and Ecuba to Odysseus.
Andromache suffers a terrible fate: Astianatte, the son of Ettore, is killed by the Greeks to prevent one day from avenging his father’s death. Hecuba and Helena find themselves in a sort of judicial agony, to establish the responsibilities of the outbreak of war.
Meanwhile, the little body of Astianatte is returned to Hecuba for the funeral rite.
Troy is given to the flames while the prisoners greet their city for the last time.
Lysistrata, summoning the women of Athens and other cities, including the Lampitò Spartan, to discuss an important problem: because of the Peloponnesian war, the men of the Greek polis are perpetually engaged in fighting and no longer have the time to be with their women.
Lysistrata proposes to all of them to do a sex strike: until men sign the peace, they will refuse to have sex with their men.