Alevtina Romanova is a penal officer in a women’s prison colony. Her image of a stern officer is betrayed only by her voice – a kind of voice to be envied by opera stars. She has been embarrassed of her gift since she was a child and now sings only when she stays alone, to herself. Once, her secret is revealed – an inmate records a video with her cell phone and uploads it in the internet. The video is a hit, and Alevtina is invited to Moscow to the country’s most popular song contest. The woman is eager not to miss her chance, and, finally, to change her life. But she is totally unprepared for the competition. The only person who can help her rehearse is the inmate – who is a former singer.