Die Fledermaus (Russian: Летучая мышь, romanized: Letuchaya mysh) is a 1979 Soviet two-part operetta film directed by Yan Frid.

However, his friend Falke, director of a local theater, persuades him to spend this evening at a ball given by the well-known patron of art, Prince Orlovsky, who came from Russia.

In the morning after the ball Heinrich goes to prison to serve his sentence, but with amazement learns that there is already an "Eisenstein" sitting there who requires a lawyer.

Suspecting his wife of infidelity, Heinrich, in the guise of a lawyer, intends to find out the details, convict the traitor and punish him.

As a result, the frivolous friends are embarrassed and forgiven, the student gets deserved freedom, and the talented maid — a place of an actress in the theater.