Single mother Maria (Daria Ekamasova) lives with her son and daughter in a science city, which is being prepared for liquidation. She believes that her physicist husband, who disappeared six years ago during a scientific experiment, is somewhere nearby — just in another dimension. A former colleague of her husband (Vladimir Seleznev) arrives in the city in search of the missing person's records, and Maria has a boyfriend-trucker Stas (Nikolai Klyamchuk), ready to take her away with her children and start a new life together. Faced with a choice, a woman can not decide to leave her invisible husband.