Alex Straub, who unwittingly became a time traveler, made many efforts to change the future. After several attempts, each time making "our time" more and more depressing, he comes up with the idea of ​ ​ temporarily transferring Joseph Vissarionovich with him to the future. Having corrected the leader's health and providing him with information about possible options for the development of history, he is returned back. And now the USSR is approaching the beginning of World War II in full combat readiness. But is it possible to turn the tide of a great war even when well informed? After all, each new step of Stalin gives rise to new consequences, which are very difficult to predict...