One day humans started to reproduce by parthenogenesis. With time, sexual reproduction became extremely rare and everyday, less and less male babies were born.
Over time, the total population of the world decreased a TON, which then caused the next milestone of the human evolution. Girls started to grow all over the world, giving birth to the era of the Godesses.
The remaining males on earth are now the size of an ant, compared to the Godesses. But one day, a simple guy, trying to survive in what is left of society, manages to draw the atention of a GTS. Falling in love almost immediately, they create controversy all over the world and they want to change it for good.