The naive sailor Ron arrives in Bahia to visit the famous Água dos Meninos street market. There, however, he is passed behind by the prostitute Maria, lover of the bandit Chico Diabo, who stabs him. He, however, can't forget her.

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 (it's not a planet, it's 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 hadn't joined the troupe yet) -, many of them inspired by American blockbusters. It's a very fun entertainment, but the humor is very "local" to be understood in other countries. Oh, yeah, the ape "makeup" is terrible, but that's part of the fun. The movie doesn't take itself seriously.

Kiko and Duda, circus workers, get into a big mess when Kiko is mistaken for the trampist Sinbad. The bumbling boy is then abducted by the minions of the magician Ali Tuffi, who already has in his power the genius of the magic bottle, but they need the trapeze artist, descendant of the true sailor, to locate the philosopher's stone with which he will become a man very rich, with lots of fortune and power. In an attempt to help his friends, the real trampist Simbad and his girlfriend Luciana also end up being held prisoner on the bandits' ship. After a confusion, everyone will stop on an island full of dangers, where the stone is hidden.