The near future. As a result of a mysterious incurable virus, the world has almost completely stopped giving birth to girls. 25 years later, there are less than 1,000 girls left on Earth...Twenty-year-old Zoe and her friends live in a research center that looks more like a comfortable prison. They were deprived of their parents. They were deprived of childhood and youth. They are being experimented on. And on their 21st birthday they will be transferred to... where? No one knows this, because none of the girls returned from there. However, Zoe is not ready to meekly accept her fate. She decides to make a desperate escape - an escape with a risk to her life and a completely unknown outcome. After all, even if she manages to accomplish the almost impossible and gain freedom, she doesn’t even vaguely imagine what kind of world will meet her outside the walls of the center...