Petersburg was swept by a wave of an unusual cultural movement: an unknown enthusiast organizes art events, trying to draw attention to forgotten monuments. This enthusiast is Mitya. He is 18. And he keeps a vow of silence. In the world of Mitya's ideas, everything is harmonious and understandable exactly until the energetic trickster Kowalski joins him with his girlfriend, the charming but dependent on him Polina. With new friends, the movement is rapidly gaining momentum: and now young people ...