Former motorcycle racer Valentin Antipov lives one day at a time. There is no permanent job, the relationship with the girl is doomed to break up, there is only enough money for booze. Life has turned into gray everyday life. On one of these days, a neighbor, an elderly veteran of the special services, unexpectedly receives a phone call. Antipov is perplexed: they practically did not communicate, but for some reason the old man decided to entrust an important secret to him. Is this a gesture of desperation by a lonely man or a secret plan of an experienced intelligence officer? Things get even more confusing when the next morning a neighbor is found murdered. Valentin realizes that he is left alone with an invisible enemy...