Barry Sullivan, Norma Bengell, Ángel Aranda, Evi Marandi, Stelio Candelli, Franco Andrei, Fernando Villena, Mario Morales, Ivan Rassimov, Federico Boido, Alberto Cevenini, Massimo Righi, Vito Fasano
After landing on a mysterious planet, a team of astronauts begin to turn on each other, swayed by the uncertain influence of the planet and its strange inhabitants.