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After a failed romantic dinner to her wedding anniversary, Marina finds out her husband Andrey has a mistress, even a few of them. The flat they live in belongs to her authoritarian mother-in-law, so Marina is forced to go and live with her mother Inga. Besides, the mother-in-law incites Andrey to deprive Marina of the parental rights to their son Gleb. To prove in court she has a steady income, Marina finds a job at a construction company of Artem Korol.
Artem’s family life is quite unhappy. One day Artem has an emergency at a construction site: an explosion damages his eyes, and doctors cannot say how serious the consequences will be. Artem’s wife Masha, pretending to help, tries to incite him to commit suicide. Marina, assuming a different name, starts looking after Artem as a nurse. Masha tells her boyfriend to kill Artem and make everything look like an accident, but Marina ruins their plan — she stays with Artem that night, and they do not hide their feelings anymore. After an operation, Artem can see again. The court returns parental rights to Marina.