As a result of the scientific experiment of the scientist enthusiast, Lieutenant of the Life Guards Hussar Regiment Grigory Savelievich Rylsky is transferred to our days from 1812. The lieutenant falls into the young family of the scientist Mitya, which is on the verge of divorce. When trying to return Hussar back to the past, the time machine breaks down, and the lieutenant is forced to stay in the 21st century until the scientist fixes the car.