Another chapter in the popular Russian graphic adventure series, based on Soviet folklore humor. Once again, Vasilij Ivanovich Chapaev, a brave Russian soldier in reality, and a drunk idiot in the series, has to save the world with the help of his assistant Petka. Another failed experiment with a time machine catapulted the heroes into the future. The year is 2050, and Russia is the only super-power of the world. But aliens have invaded the earth! It appears that in the time of the king Ivan the Terrible (16th century), those aliens helped him to conquer the Tatar city Kazan. As a return, the king promised to pay them an enormous amount of money in 2050. Now they are here to collect the debt. To prevent this disaster, Vasilij Ivanovich and Petka have to travel to the 16th century - the feudal Russia...