Before reading

Three main characters Kalina, Weronika and Lidia go on holiday to Berlin. One day, while exploring, they find a bunker from the Second World War. They go inside, where they find a time travel machine, which they accidentally activate, and travel to early June 1941. Several days before the Third Reich attacked the USSR. Will they manage to change the course of history? Will they survive 4 years until the end of the War? You will learn about it in the book. Enjoy reading (SORRY FOR MISTAKES, ENGLISH IT'S NOT MY FIRST LANGUAGE)