LySIStrata, by the way. Not LYsisTRAta. Who knew?
The women of Greece decide to end war by withholding sex from their men until they make peace. Hilarity ensues. This is very bawdy. The British accents of the edition I listened to made for a delightful contrast.
But of course, women in Greece (especially Athens) didn't actually have any power, which makes for an uncomfortable subtext.