The Mironovs, having bought a house, discover a bricked door in its basement, which they opened out of curiosity. Behind it was a portal to a parallel world - the USSR in 1972. The Mironovs decide to help the USSR avoid the mistakes of their country and take a different path. How will they succeed and will they succeed at all? Maybe they will simply block the portal - after all, Russia in the 21st century is much more successful than the USSR in the 20th century! The standard of living of the people has increased by an order of magnitude - but the main goal proclaimed by the CPSU is to increase the well-being of the people. Read and find out!