Ferrando and Guglielmo are in love with two sisters, Fiordiligi and Dorablela. Don Alfonso, a philosopher friend, bets to them “all women are the same”, and says their women, as any other, would cheat on them having the opportunity. Is so as Ferrando and Guglielmo accept to be at the disposal of Don Alfoso for 24 hours. In this time frame, divised by Don Alfonso and with the help of the sister’s maid, Despina, the young men “go to war”, come back as “turks”, declare their love for the women, are rejected, “poison” themselves, are saved by a “doctor” (Despina in disguise), sing a serenate, go for a walk with the sisters around the woods, conquer the girls, get disabuse, get engaged as turks (each one with the opposite girlfriend) and eventually “marry” them (thanks, again, to Despina in disguise, this time as a Notary), to “come back from war”, expose their women, unmask the deception, demand punishment… and finally forgive them. All in 24 hours.