Banana Joe (Bud Spencer) is delightfully free of the ravages of intelligence and lives blissfully in a tropical village in Africa which is untainted by hard-nosed corporations, corruptions, drugs, gangs, or other ills of modern society. One day Banana Joe takes his banana boat to the local trading post where he is informed he now needs a permit in order to operate his boat. Quite willing to comply with this seemingly simple formality, he treks off to the big city to gain this important piece of paper. On his way to obtaining the permit, he sees television for the first time, runs into crooks, and falls in love with Dorianne, a beautiful young cabaret singer who opens him up to the world of feminine charms. After more than one contre-temps after another, Banana Joe gets the permit and heads back to the village only to find that the Mafia have taken over in his absence! He's such an earnest fellow that the last thing on his mind is wreaking havoc in defense of his living. However, he has no choice and the movie ends eventually in a spectacular free for all, as he throws the Mafia out of Amanlido for good. Life is once more peaceful and uncorrupted, the way it was in the beginning.