Cadets of the Alexander Cadet Corps accidentally discover a strange device in the basement and for two days find themselves from their 1908 to 1972, from their reality to ours. Now, in order to understand their present, they will have to understand someone else’s future, and also track down those who rule their time and world as if they were at home. Because six years later, when the empire is overwhelmed by revolution, they need to make their own - difficult - choice for each of them. War games and a Christmas ball, ancient dungeons and the streets of Leningrad, chases across the rooftops and an armored train flying through the night, red banners... and golden shoulder straps with the imperial monogram await them...