When X Divides Y: After the Men Died

It's been four generations since the last male walked the planet.

At least... that's what the women of the world have been told.

An 18-year-old male convinces his buddies to escape the research lab where they've been raised. Once free, Winsor quickly learns that the world populated exclusively by women was not at all like what they were led to believe. 

Seventeen-year-old Philly Carpenter is down on her luck, having lost her one chance to help repopulate the planet. But meeting Winsor sends both their paths on a new direction.

Where did Winsor come from? Why were boys being raised in labs?

And most importantly, why wasn't anyone aware that males were still alive?