Some of them know the truth. Someone is impersonating someone else. And someone... will die soon.

Kira Zhuravleva does not remember herself until she was 10 years old. All her childhood photos are cut up in a zigzag pattern, except for one. The mother is always running away somewhere with a geranium in her hands, and the father is constantly lying...

When a girl gets the chance to finish her senior year in Moscow, she doesn’t hesitate. After all, Kira will live there with family friends - the Vorontsovs. The same ones that are depicted in the only surviving photograph. Can these people know what her parents have been hiding for so many years?

The Vorontsovs meet Kira in their mansion. Now she goes to a private school for gifted teenagers with their daughter Alla and secretly investigates the circumstances of her past.

Alla, at 19 years old, is well versed in poisons and writes articles for scientific journals. But her abilities are much more amazing: she can predict the death of others. Mathematically. And it seems that the victim from her last prophecy formula is somehow connected with Kira...