Anna (Lyubov Tolkalina) lives in an established marriage with her husband Andrey (Dmytro Lalenkov). Her routine is disrupted when Egor (Vyacheslav Manucharov), a charismatic man roughly ten years her junior, begins aggressively pursuing her. Intrigued by his persistence, Anna enters into a passionate secret extramarital affair with him. As Egor's pursuit turns increasingly obsessive, Anna attempts to break off the relationship to preserve her marriage. However, the emotional damage culminates in a tragic apartment fire, leaving the home destroyed and Andrey missing.