June and Day sacrificed a lot for their people and for each other. But as soon as there was hope that the country would not fall into the abyss, a time bomb went off. A deadly strain of plague, created by the previous regime as a biological weapon, has crossed the border of a neighboring state. The weakened Republic is presented with an ultimatum: either it will provide a vaccine, or it will face a war with a coalition of superpowers. To create the serum, you need a carrier of the virus - young Eden, who miraculously survived the inhumane experiments and has recently recovered. But Day categorically refuses to save the country at the cost of her brother’s life, and June is forced to turn to a third force, whose participation may be too expensive.