Plot:
Narration and stock footage show us the tropical island. Duke and Sammy are found by natives and brought to the village. Nona, the extremely hot daughter of the chief, convinces the others not to kill them. The heavily masked witch doctor is certain they should be killed.
Later, Nona discovers who the men are when they awaken. The worst Jerry Lewis impression ensues. Sammy and Duke fell out of airplane. The natives of Cola-Cola welcome them and plan a luau in their honor.
At the luau, the typical dancing natives ensue. Sammy isn’t too happy that Duke has the uber-hot Nona. Well, Sammy gets introduced to the hefty Saloma, baby sister of Nona. Saloma keeps trying to fatten Sammy up.
I've never heard Queen's song about Fat Bottom Girls...
More horrid Jerry Lewis impression occurs during the tribal dance.
Sammy starts his nightclub act for the natives to dead silence until Nona translates it in the native language.
Ladies and Germs, a little ditty called 'Blaze of Glory'.
Saloma carries Sammy away. Duke decides to serenade Nona with his unique song styling. The song “Deed I Do” isn’t known for a good reason because it is worse than the Wookie Life Day song.
Later, Nona mentions Dr. Zabor who is studying evolution on the island.
Sammy is trying to escape Saloma. Stock footage ensues as day and night are intercut. She finally catches her gawky unfunny scrawny man.
Let the lovin’ ensue between Duke and Nona. Sammy’s high-pitched scream ruins the suckin’ of face.
Dukey, take me now my gawky stallion..
The next day, Nona takes Duke and Sammy to Dr. Zabor’s castle. After the introductions, Sammy thinks Zabor is a vampire. The good doctor offers the castle’s hospitality to Duke and Sammy and is very happy to help them.
Nona is working in the lab. She shoots Zabor’s indecent proposal.
Duke and Sammy thank the doctor for his help. The good doctor tries to explain his experiments about studying evolution. Zabor can advance evolution in hours.
Painful comedy with Sammy and Ramona the chimp.
Duke and Sammy meet Pepe, the island cop who has the only radio on the island.
Ramona the chimp is able to trap Sammy in the cage.
Night, Duke is with Nona.
Back at the castle, Zabor is brooding while hitting the whiskey bottle.
Sammy is in bed when Ramona the chimp sneaks in his bedroom. At first, Sammy doesn’t seem to mind being groped by Duke. He freaks when realizing a chimp was doing it. Sammy takes Ramona back to her cage. Awful lullaby ensues before Ramona locks him back in the cage again.
Duke returns to the castle and hits the hay.
Chief Racka talks with Zabor and decides to have another luau.
Zabor, Duke, and Nona are present. Sammy is trying to keep Saloma from fattening him up. Nona and Duke sneak away. Zabor sends Chula, his servant, to spy on them. Sammy and Saloma leave but Sammy is trying to hide from his Pacific Island Passion flower.
Chula spies on Duke and Nona who gives Duke a pre-engagement necklace. Duke serenades her again. Pseudo-Dean Martin song ensues before more lovin’.
Zabor heads back to his castle and leaves the luau. Chula informs Zabor of what happened. Dr. Zabor broods before beginning working in the lab. He is able to finish his formula and injects Ramona the chimp who reverts to an infant state. Zabor is enthusiastic that he can turn a man into a gorilla. Chula is terrified he’ll be the test case. However, Zabor has a better test case to test.
Nona returns to the castle in the morning.
Duke will talk with Pepe to use the radio to inform the authorities about them. Zabor can’t spare Nona to go with Duke. She tells him to ask the Chief to show him to Pepe’s cabin.
In the jungle, Chula knocks Duke out and brings him back to the castle. Sammy stops by the lab. Zabor gets him and Nona to run an errand. Chula brings Duke in the lab and the experiment begins.
In the jungle, Nona finds the necklace.
Duke is trapped in the cage.
Back at the village, Nona learns that Duke never came by. She organizes a search party and heads back to Dr. Zabor’s castle.
The magic of time lapse photography shows how Duke changes into a gorilla. Awakening, gorilla Duke won’t get any wild monkey lovin’ with Nona.
Nona and Sammy enter the lab and spot the caged gorilla. Zabor claims the gorilla is actually Ramona. Gorilla Duke rages in the cage. Sammy will stay behind. Zabor and Nona will go back to the village.
Gorilla Duke tries communicating with Sammy. They start playing charades? Sammy finds Ramona and Duke’s clothes. He can’t figure out what that means until Gorilla Duke begins singing “Deed I Do.” Sammy lets him out of the cage…
Gorilla Duke knocks out Chula and goes upstairs with Sammy.
At the village, there has been no more word about Duke.
While Sammy tries to fire up his single neuron to formulate a plan, Chula awakens and leaves the castle to warn Zabor.
Nona starts bawling fearing the worst about Duke. Chula tells Zabor about the gorilla. He magnanimously gives permission to kill the gorilla.
The grunting of Gorilla Duke brings another gorilla. Sammy ponders the problem. Gorilla Duke runs off and real gorilla climbs into the room. Sammy tries to forcibly clothe the gorilla at first. He follows after Gorilla Duke when realizing his mistake.
Out of the castle, they knock down Zabor and Chula. Zabor gets his rifle to end the problem permanently.
The villagers panic when they spot Gorilla Duke with Sammy. He tries explaining what happened to Duke. Nona believes him for some unexplainable reason.
Dr. Zabor arrives and is about to shoot Gorilla Duke when Sammy takes the bullet for him. Sammy dies.
Suddenly, Duke wakes Sammy up from a nightmare. They leave the dressing room and run into Nona with a gorilla actually a guy in gorilla suit. They head to the stage and pass Pepe and others from the island. The club owner, Bela Lugosi wants a better performance from them or else.
The tribal dancers are led by Saloma who rushes up to Sammy to swap some spit who decides she’s not so bad after all.
A few more bad lame Jerry Lewis jokes ensue before Duke starts assaulting us with another song…”Deed he does…”
