Plot:
A couple of bearded guys shoot somebody. The only witness, Dweeby runs off. He is carrying a note from the dead guy. Dweeby manages to disguise himself with a fake mustache that looks fake compared to the lame Halloween costume mustaches. He heads to a bar to meet with an agent he hasn’t ever met and automatically assumes it is a chick. Several lame code phrases later, Dweeby talks with Agent XK 1-20.
Cheesy animation through the credits ensues. Narration reveals that after the Cuban revolution, many Cubans smuggled loot out. An American mobster, Renzo Capetto is recruited by the Cuban military that plan to take the Cuban treasury with them to refinance a counter revolution against Castro.
A car chase is TOO DARK TO SEE.
The next day, Renzo has the Cuban treasury loaded in a strongbox on his boat. Dweeby manages to get hired as one of the ship’s crew. The ship takes off with Renzo’s men and the Cuban military officers. Narration reveals about how ruthless Renzo is, Mary Monahan (Renzo’s chick and gun moll), Happy Jack Monahan (Mary’s brother), and Pete Jr. (Renzo’s thug who mainly communicates by way of animal calls).
The crew is taking for the Cubans for a ride. They need to eliminate half the Cubans without them getting alarmed. Renzo has heard about a sea monster from Cuban fisherman and plans to make it look like some sort of sea monster is stalking them.
Dweeby (Sparks Moran) manages to build his spy radio to contact with base.
Komedy ensues when Mary continually insults the Cuban general whose assistant keeps translating what Mary says into compliments. Sparks tries to convince Mary to reform and run off with him.
That night, Renzo kills a Cuban soldier and plans to start the Sea Monster operation which will get him to change course. Then, the real sea monster kills another soldier. Everyone hears the ruckus, and Renzo tells them the legend of the sea monster. The general believes there’s a monster…
Later, Renzo changes course to “evade” the monster and decides where to head next.
Sparks eavesdrops and hears the wrong location that he reports.
As the crew is working, Mary assaults us with a song. You’d think just having her sing would drive the soldiers overboard quicker…
Another boat pulls up to them claiming to represent Cuba. Renzo and the men gun that crew down. Sparks claims Mary will love him and he promises to save her. She spurns him again.
Renzo has a plan to take care of things. Sail the ship through some narrow reefs and crash it. Take the lifeboats to a near deserted island. On the way to the island, the strongbox is dropped into the water. While on the island, move the box to a different place. The Cubans will search for a while and then give up, and Renzo can get the box…
In the commotion of the crash, the monster gets another soldier. The lifeboats are loaded.
They reach the island. The crew is to scout, get a hold of a rescue boat, and build a hut in 15 seconds.
Sparks finds telephone on the beach and contacts XJ 1-20. He can’t say much with the random islanders that suddenly want to use the phone.
Animal impersonator roams about making his animal sounds. He finds Portina (Animal Chick is easier to remember) who does the same sort of animal impressions.
Back at the hut, Animal and Animal Chick bring fruit to Renzo and the rest. Happy Jack returns with a rescue boat, diving equipment, and girl (Carmelita).
Carmelita has burning pork chops or loins for Sparks.
The crew readies to dive. Diving footage ensues, and Renzo decides to use the Sea Monster bit again to eliminate another soldier. Underwater attack ensues and Sparks narration about the evil of Renzo. Another soldier down.
Happy Jack learns that his squeeze, Carmelita, longs to sample Sparks’s plug.
The Cuban general decides to dive and be armed with spear guns now.
Animal Chick introduces Happy Jack to Mango not Chris Kattan…
Animal Chick’s husband attacks her until Animal drives him away.
Mango badmouths Happy Jack according to the Spanish subtitles. She is only putting up with him for the hope he’ll buy overpriced island souvenirs. Happy Jack wants to marry Mango. Animal and Happy Jack decide to eliminate the crew and take the strongbox for their own.
Renzo is waiting for Happy Jack and Animal as the Cubans dive again.
Animal, Animal Chick, Mango, and Happy Jack are frolicking in the water.
Diving footage, Renzo finds the strongbox. The monster spots him and the group elsewhere.
The beach group is splashing unaware of the monster who grabs Mango. The others start looking to no avail.
Happy Jack confronts Renzo and accuses him of killing Mango. Mary even believes her brother. Renzo is sure there actually is a sea monster. They have to get rid of the Cubans ASAP…
More diving, the monster watches when the General finds the strongbox. Underwater spear fight and tussle ensues. Renzo kills the general. Happy Jack finds Mango’s remains when the monster finishes him off.
Mary is angry about her brother and blames Renzo for it. Sparks tries hitting on Mary again who shoots him down faster than Bon Jovi in a blaze of stupidity by pushing him out of the boat. Carmelita pushes Mary out of the boat.
Renzo and the Cuban colonel are the only ones left.
Sparks realizes that Mary hates him and decides he could try Carmelita. She isn’t bothered by being his second choice.
The monster approaches as Mary and Renzo profess their love.

But, Guy you said you would abandon the girl for me...
Mary is whacked. The monster finishes off the crew and the Cubans. Sparks and Carmelita paddle away.
The monster finishes off the dumbest animal impersonator this side of infinity. Renzo retreats as the monster finishes off Animal Chick. Renzo can’t hide before he is gotten as good as the rest have been got.
Carmelita and a business suited Sparks, who didn’t realize there was a monster until the very end was killing everyone escape. Sparks narration is about how he got the girl and the monster got the gold.