The anti-corruption Organization and the best virologists of the country find the "virus of corruption" in the blood of ruthless corrupt officials. And they create a vaccine against the virus. Two candidates are found for verification: Ardaev, the prosecutor general of the city, a big bribe taker, and Ruslan, the director of a nursing home, the most honest person in the country.Ardaev is secretly injected with a vaccine, and Ruslan is infected with the "corruption virus". The lives of the test subjects are changing dramatically, and the virus is getting out of control.