The main character - a man who suffers from alcoholism - wants to change his tumultuous life. The day before Christmas Eve he receives a gift from his son - a yellow scarf. A gift is a kind of talisman he receives from loved ones, and every time he loses it. When after another banquet he falls into delirium, his ex-wife and secretary bring him to his mother. She helps him to sober up and arranges holiday celebration for two of them. She gives her son another yellow scarf, in belief that it will help him break the pernicious habit.
An unknown terrorist infects computer networks with the most important institutions in the country with the virus. It paralyzes hospitals, trains, aircraft control system. Suspicions fall on Michal, a thirty-year-old IT genius and owner of a small computer company. Michal must prove he is innocent. He agrees to the proposal to cooperate with the prosecutor.