While on the train, Olga suddenly discovers sunglasses with strange and even frightening properties. They, among other things, are even capable of killing... They can also heal any disease, and with their help the girl managed to cure a terminally ill girl Lenochka from leukemia. All this is simply wonderful, but it soon becomes clear that the glasses have an owner. More precisely, the owners. And Olga, without realizing it, finds herself in the very epicenter of a struggle, neither the meaning nor the goals of which are unknown to her. It’s just that the heroine, as they say, “crossed the line”...