In the future, a special device was invented for studying the past time - a chronometer. And now Zhenya is almost a superhero, because she can change the past of others. Like the other eight teenagers living on an artificial planet, like brothers and sisters - siblings. All of them had already lived their lives, but one day something went wrong. Larisa Romanovskaya is a laureate of the “Book” and “New Children’s Book” awards. The fantastic story “Siblings” was included in the short list of the “Book” competition in 2017.