Dr. Lorenc selects excerpts from older Czech films for a symposium on laughter.

A military base. An awkward soldier. A statue of Bach. And suddenly all guns in the area change into music instruments. Great mystery is immediately found by TV station. And soon the military base becomes a stage for huge TV show.

The bank officer Bedrich Hroch is sent by the bank director to the zoo, which asked an allocation of one and half kg of gold for a gold tooth for a hippo. During the check up of the hippo's teeth Bedrich is swallowed by the hippo. The man does not die in the hippo's guts and he chats quite happily with his frightened wife Dása. Journalist Pip Karen, his friend is also present to the dialogue and he has immediately an idea how to use this special situation. He tells to the new minister Borovec and his opponent professor Fibinger that there is a hippo in the zoo which can speak. He also tells them how to use this situation for a political propaganda.

Švand, a room painter from Strakonice, begins a dizzying career as a pop music star, but he soon discovers that fame is not the most important thing in life or what he is looking for and what he longs for in life.

A musical comedy about a date between boy and girl which started badly but continued very unexpectedly...