A simple school teacher Vasily Telnik becomes an unwitting witness to the murder of an oligarch. Refusing to testify, he automatically becomes the prime suspect. In order to save her father from prison, Telnik's daughter Irina, on the advice of a lawyer, agrees to place him in a psychiatric clinic, the head doctor of which is the famous Moscow psychiatrist Dmitry Korzunov. The young girl does not even suspect what consequences her decision will have...