It all started, as in an ordinary story about the "Popatans" - Ignat landed in 1967, an unstable time between the "thaw" and "stagnation." I got into the body of Marlene, a young guy like himself. In the evening I got into the past, and in the morning I returned back, and found that there was a castling - Marlene was transferred to "his" future. And again the cast in the year of the 50th anniversary of the Great October Revolution... Now for a long time. What will Ignat and Marlene endure, changing places and times, what will they discover in the past and future, who they will become? And both are not released by alarming riddles: why did unknown forces choose them? And who are they, anyway? What connects them? And will all the secrets revealed to them turn out to be good?