We all have mistakes of our youth, sins that we want to forget forever and never remember. But what to do if, out of stupidity and naivety, you put an innocent person behind bars? How to live with this further? So Dina Ignatova tried to answer these questions. Many years ago, her former admirer was killed in the gateway of her home. Dina saw only the backs of the attacking hooligans and heard a couple of phrases, but pointed the investigator to her classmate Daniil Kuzmin. Now she is plagued by doubts about whether Daniel was the real killer, or whether he went to prison through her fault. All this interferes with her prosperous and measured life. Dina waits with fear and doubt for her personal enemy, whose prison term will soon end. He obviously wants to visit his former classmate and turn Dina’s life into a real nightmare.