Mexico, 1940. NKVD agent Ramon Mercader enters Leon Trotsky's house. Under his long leather coat he hides an ice ax. He is there to kill the Russian revolutionary who suspects nothing.
Moscow 2019. Ioura, an excellent student rather obliterated, helps his classmate Masha in history. They are studying the murder of Trotsky by Mercader. Masha, the crazy girl, decides to seduce Ioura. At the crucial moment the censor enters the class. She believes that such an irresponsible teacher has no place in the school and decides to dismiss her. The bell rings. As if by magic, the three ends of the stories mix and generate an astonishing new approach to well-known events.