In the country you live in there is a interesting curse that activates during a blue moon then lasts until the next full moon. the curse in particular is that everybody that within the borders is turned into a girl. tonight is a blue moon and the next full moon is over a month away. you have 3 hours to get out before the moon rises and the curse happens, only one problem border control will have their hands full trying to get everyone who wants out out (usually a few hundred).