Vera Nikitina unexpectedly finds out that her daughter Ira... is not her own. It turns out that 14 years ago two girls were mixed up in the maternity hospital. Vera begins searching for her biological daughter and finds information about three teenagers who were born on the same day. But how can you recognize your loved one among them? It is unlikely that parents will agree to do a test so that their child will be taken away from them later.