After several bloody wars and nuclear explosions, there was nothing alive left in the world. Or almost nothing. A small piece of what was once a huge country survived and the surviving people were able to found a small city called “Fortress” in this place. This city has its own laws, harsh and unshakable, which have been in force for several decades. The founders learned from the mistakes of the past and created the ideal system. But are all the residents happy with the fate that the Fortress has chosen for them? A young girl named Eva, barely having time to leave the walls of the school, realized that the future destined for her was far from ideal, and although an open struggle with the regime was not included in her plans, she still did not violate some of the laws of the city for the sake of her personal happiness. sees nothing wrong. After some time, Eva and her best friend Anya face a difficult choice, on which not only their lives depend, but also the lives of the young people with whom they are in relationships.