Oaklee Rogers didn't know her ancestors arrived on Earth 2 over a century before as all information had been suppressed by her ancestors.
A bomb exploded by males against Dome 6 where she worked restarts gender wars against The Women's Free State. Three women and herself survive of this attack and discover that their ancestors have provided a truck hidden behind an invisibility shield for a century for them to use to drive to freedom.
The female spaceship is still in orbit and her great grandmother Ursula Rogers, captain of this ship is awoken from suspended animation to help them.