A terrible pandemic of the future: cancer has become contagious and threatens to kill, including the main character’s daughter. To keep her alive, he commits a crime, but is caught. Investigative authorities present the hero with a choice: either he goes on a scientific experiment to transform the past with the help of a time machine, or he will be annihilated, that is, destroyed by a court verdict. Now the hero has only one chance: to return to the past, to the 21st century, and himself destroy the one whose actions once led to world disaster. The disaster was caused by the fact that a certain scientist sold scientific samples of the drug to inept competitors, which is why the untreated COVID-19 coronavirus turned out to be undefeated, causing irreversible genetic consequences, and cancer became an infection.