Československá televize

An interstellar expedition is sent to study a strange planet. Despite the fact that creatures from various Earth time periods inhabit the world, the natives possess metal swords, even though they should have no knowledge of such weaponry.

A young man living in a strictly run boarding house secretly brings a girl of loose morals into his room at night, who is nevertheless well-groomed and takes great advantage of her situation. For the heart of the comedy lies in the problem of how to get rid of a difficult girl in the morning.