This movie is a spoof of Planet of the Apes (1968) and follows the storyline of the original step by step - in spite of being a crazy parody of the original film. A group of men lands in a balloon on an area (its not a planet, its more like a hill) where talking apes rule and humans are slaves. The apes try to transform the guys in monkeys; a simian princess falls in love with one of them; and so on. This film is one of the several movies made for the popular Brazilian group Os Trapalhões - Didi (Renato Aragão), Dedé, Mussum and Zacarias (who at this point hadnt joined the troupe yet) -, many of them inspired by American blockbusters. Its a very fun entertainment, but the humor is very local to be understood in other countries. Oh, yeah, the ape makeup is terrible, but thats part of the fun. The movie doesnt take itself seriously.