Writer-director Otakar Fuka is associated primarily with the attempts of screenwriters from the “normalisation” era of Soviet entrenchment following the Warsaw Pact invasion to entertain audiences with genre films. Besides a number of detective stories, the experienced filmmaker also shot an ambitious sci-fi movie, in which he collaborated on the script with Irena Drahoňovská and the co-author of Fuka’s previous film, Svědectví mrtvých očí (The Evidence Given by Dead Eyes) – Drahoslav Makovička. The protagonist of this adventure film, Doctor Junek, reveals the true identity of the beautiful Zuzana in this mystery story. She is actually an alien, who is seeking the eponymous plant extract with her partner. Bororo is a substance produced by Brazilian Indians and it could help the members of the alien race cure the disease that they have spread to their home planet from Earth. However, the malevolent Kraus – a former Nazi who wants the drug for himself – stands in the way of Junek and his new extra-terrestrial-researcher friends… Akce Bororo (Bororo Operation) brings together various crowd-pleasing elements: a sci-fi fantasy theme and Nazis surviving somewhere in South America are combined with an attractive Brazilian setting, where the curious Junek eventually goes on a quest to find the miraculous substance. Although the filmmakers tried to evoke the illusion of shooting in an exotic foreign location solely with the aid of archive documentary footage, the overall credibility of the story also owes a lot to the notes of the Czech explorer Alberto Vojtěch Frič. Naturally, this intellectually and stylistically simple film from 1972 cannot compete with American or British films of the same era that were similar in terms of genre and theme. Nonetheless, it bears comparison with Soviet sci-fi adventures of the 1970s. Svatopluk Matyáš played the role of Junek and Oto Ševčík took the part of the villainous Kraus. The Slovak actress Božidara Turzonovová gave an absorbing performance as the attractive alien Ori-Ana.
Dr. Junek, a research worker at the Research Institute of Aeronautics Medicine, meets at the transport accident a beautiful girl who introduces herself as Suzan Kettner from Rio. She says she is a daughter of the Czech who many years ago moved to Brazil. Junek falls in love with Suzan at first sight. He invites her to the trip to the Tatras Mountains where she becomes his lover. While visiting the observatory at the Lomnický Pike she utters by chance two curious words: Ré and Tonatiu. Soon Junek discovers in the girl's handbag a candid camera hidden in the sun glasses. Suzan secretly photographed the notes of the traveller Frič which fell into her hands by help of Junek, because Frič's widow was Junek's friend. After return, Junek looks into Frič's diaries and reads about a medicament from the leaves of the tree bororo. Under certain conditions, though, this may change into poisonous stuff. Junek sets out to Brazil to search for the tribe Bororo, the members of which produced the medicament. He does not find them but he meets there Suzan. He learns that the girl's name in fact is Ori-Ana and that she and her companion Seturi come from Cosmos, from the planet Tonatiu. They need remedy for human illnesses which were spread to their planet. The Nazi Krause, who searches for the medicament as well, kills Seturi and injures Ori-Ana. Her life can be saved only by the medicament bororo which is found by Junek in Frič's estate. But she refuses it. Before death, she asks Junek to help her countrymen who will come in future after her. Junek gets rid of Krause and continues the scientific work. One day, there turn up at the institute two persons looking like Seturi and Ori-Ana...
Ori-Ana alias Zuzana Kettnerová
astrolog docent Burger
Seturi, Ori-Anin společník
ředitel výzkumného ústavu Zeman
bývalý nacista Krause
skutečná Zuzana Kettnerová
Kettnerová, Zuzanina matka
tlumočnice z portugalštiny
důstojník na lodi
číšník v hotelu
Lubomír Břinčil, Marie Beránková
František Jaderník, Milan Štěch