I know that the idea of Menstrual Synchrony is as of yet unproven but for this story lets assume that it is a reality.
The plot is simple a sorrority house on a college campus is openly only open to outed lesbians, not just any ordinary dykes but the kind that men drool over. Feminie and real women in every way but openly man haters.
They manage to piss off a local ang and the ganng leader has decided that a few of these bitches need to be taught a lesson. He learns that they will be having a party for lesbians only and decidedsthe time is perfect.
They happen to by chance pick a weekend where all of these dykes are fertile and ripe
The story should work from the girls point of view mostly, they know they are ripe and are unprotected many have never had a male lover or done anything sexual with a male. S.
When the gang leader figures out all these gals are ripe he orders his men to fill every cunt to the brim.