In a popular form, the film introduces the contemporary problems of topology.
The doctor of Physical and Mathematical Sciences, Professor V. Alexandrov tells.
A woman tells a child the device of the fountain.
A child walks along the side of the fountain.
A boy on a bicycle rides around the fountain.
The actors act out a conversation scene between two scientists.
One of the heroes goes to the subway.
The production is based on the story of A.J.
The hero - Remizov S. S. gets on a subway train.
The metro scheme.
In the subway, they discuss the loss of the train in which S.S. Remizov left.
At night, workers check all metro lines for the presence of a missing train there.
The dispatcher starts the train movement in the morning.
Children are walking in the park.
The heroes of the production discuss the loss of the train.
One of the heroes of the production, Konstantin Mikhailovich, discusses the loss of the train with the metro management.
Metro management descends on the line.
People hear the train, but they don't see it.
People go down the escalator.
Employees of the metro and other services discuss the appearance of the train at different stations at the same time.
The missing train is being discussed in the metro control room.
The heroine of the narrative explains the concept of topology to interested parties.
A cartoon showing the principle of a Mobius leaf and a Klein bottle.
A meeting in the subway.
An empty metro station.
An employee of the metro goes through the technical part of the station.
An empty train is traveling through the station.
The heroes of the production go to the subway.
Two months later, the heroes meet in the subway control room.
The hero of the production discovered the missing composition.
In the missing carriage, the hero sees Remezov S.S.
The doors close and the train leaves.