Fifteen years after being the cause of an alleged love suicide there, writer Paul Herzog returns to Prague where he meets Clarissa, the sister of the deceased woman. When a couple of mysterious deaths occur amongst people who were close to Clarissa and her sister, Paul becomes the prime suspect...
Young English gentleman Richard travels with his uncle Archibald to Prague, Czech kingdom. There he meets a beautiful girl Olivia, a young noblewoman with a secret. They fall in love with each other but he doesn't know Olivia is a companion of evil count Kronberg, ruler of pack of Prague vampires.
The film is essentially a feature-length commercial for an exhibition to mark the 40th anniversary of the nationalisation of the Czechoslovak film industry, to be held at the Prague U Hybernu venue. The protagonists of the piece are comedians Oldrich Kaiser and Jirí Lábus, who are set to accept an award from Japanese television representatives at the exhibition. At the same time, five gangsters plot to seize a revolutionary invention devised by professor Suzuki - a super holograph, which enables any figure from television to be transported in the flesh into the real world, and vice-versa.
Hubert Hrabe, known as Smart Boy, is a Prague dandy who is always skirting the edge of the law. Like every likable rogue, he has a worthy adversary - Police Inspector Mourek, who has long been trying in vain to put him behind bars. However, this defender of justice, who is constantly trying to outsmart his "own" criminal, ends up becoming the victim of his own zeal while hunting forgers that are as good as any in Europe, as Hubert the Smart Boy, sets a trap for Mourek
To the intolerant and bloody-minded Prague actor Bergner (Milos Kopecký) is the lead in Moliere's Misanthrope which he is studying now as tailor-made. On top of that he is malicious and he advises to the new actress Helenka (Dagmar Havlová) in such a way that she upsets the theatre director. If Bergner accuses somebody of a mischief and he is wrong, he never apologizes. When he almost crashes an older elegant lady by his car on the zebra crossing, instead of an apology he calls her an old ballet dancer... But in Brno's TV he takes part in a discussion on manners and he gives himself as an example of good manners and grace. In the train he meets a magic old man (Ladislav Pesek) who warns him and admonishes him to change his behavior. After he arrives to Prague the old man's threat comes true.
An historical depiction of the events preceding the political murder of Archduke Franz Ferdinand, would-be emperor of the Austro-Hungarian throne, in Sarajevo on June 28th, 1914.