Building manager accidentally becomes Tsar Ivan
In 1930s Moscow, engineer Timofeev's experimental time machine hurls building manager Bunsha and petty thief Miloslavsky into the Kremlin of the 16th century, while Ivan the Terrible lands in the communal apartment building. Because he looks like the tsar, Bunsha is accepted on the throne, where he stamps decrees, fusses over protocol, and lets Miloslavsky casually hand the Swedish ambassador the Kem district. Meanwhile the real Ivan, marooned among telephones and neighbours, is hunted as an impostor by the very building apparatus Bunsha used to run.