The main characters are some serious male chauvinist pigs, and some of their victims decides to make use of a spell to teach them a lesson.
As a result of this spell they wake up one morning and find themselves to be.... eh, well, girls.
In the edit below you will find the transformation scene and the scene following it.
For some unknown reason our two leads immediately dress up as girls for a day beside the pool (I am not sure I would have made that my first priority).
Furthermore, one of the boys/now girls decides to have sex with the pool boy (or whoever he is -- my French isn't that good), without hesitation.
Admittedly his friend displays a little bit more reluctance, but as TG stories goes there is not much resistance.
You do not really need subtitles to understand the plot.
WARNING! The following clip contains a scene with explicit sex! It is for adults only!