Russian Empire, 1908. Very similar to the one that was, and yet different: here on the throne is still Emperor Alexander III, and children in schools read Pushkin's poems written during the siege of Sevastopol. But this empire is also on the verge of great upheavals ... The people’s unrest begins, the underground plan an uprising, the youth dreams of freedom . However, for boys enrolled in the Alexandrovsky Cadet Corps, this is not a reason to postpone their studies. While the usual life still continues: cadets solve problems, disassemble battle schemes, make friends and feud with each other. In six years, the disaster will still break out .. But is it possible to prevent it? And, it would seem, what does it have to do with the mysterious dungeons under the building of the body?..