- Patrick Star
- SpongeBob SquarePants
- Squidward Tentacles
- Frankie Billy
- Jimmy Gus
- Nancy Suzy Fish
- Nathiel Waters
- Eugene H. Krabs
- Abigail Marge
- Jennifer Millie
- Scooter (Purple)
- Billy the Brown Fish
- Martha Smith
- Monroe Timmy
- Norma Rechid
- Old Man Jenkins
- Shelly Fishbowl
- Taylor Fishbowl
- Harold Bill Reginald Scott
- Susie Rechid
- Medley Fishbowl
- Vera Fishbowl
- Debbie Rechid
- Tina Fran
- Billy the Lime Fish
- Miss Rechid
- Officer Rob Johnson
During a game of tag between SpongeBob and Patrick, the duo carelessly falls off a cliff and into an underground cavern, which conceals a large shipwreck called the "Mauna Loa." SpongeBob and Patrick excitedly then spend the day playing on and exploring the ship, soon discovering a giant pile of golden coins with the words "Mauna Loa" engraved on each inside. Suddenly, SpongeBob checks his watch and realizes that he is late for work, running off and leaving Patrick on his own.SpongeBob, at the Krusty Krab, distractedly does his work while thinking about their hideout. SpongeBob even creates a Krabby Patty in the shape of a ship, which he ends up throwing away when an impatient Squidward inquires him about his peculiar creation. Patrick, adding an insult to injury, walks into the restaurant wearing a shirt with the words "Follow Me to the Mauna Loa" on it. When SpongeBob asks Patrick to make their secret hideout less obvious to the public, Patrick only responds by repeatedly chanting "'Secret Hideout!'", getting the attention of everyone inside. When SpongeBob yells at Patrick to stop, Mr. Krabs bursts through the door and impatiently asks Patrick to leave the kitchen. As SpongeBob ends his shift and walks out with Patrick, Patrick pays for a Krabby Patty with one of the coins from the ship. When Squidward confusedly mumbles the words "Mauna Loa" Mr. Krabs snatches the coin from him, reflecting that the Mauna Loa houses the ocean's largest hoard of treasure and that he has been searching for it his entire life. He then dubiously follows SpongeBob and Patrick to the hideout's entrance, which was made obvious by a sign that Patrick had put up.
SpongeBob eventually shows Mr. Krabs the pile of coins, which causes Mr. Krabs to happily celebrate his lifelong goal finally being achieved. However, SpongeBob notices and points out to Mr. Krabs that the gold coins are actually tokens and have no monetary value. Mr. Krabs thinks that the fake stash is simply a decoy and believes the real treasure is hidden somewhere else on the ship, but upon further exploration, the trio find a ticket booth, a height restriction chart, and a plastic skeleton wearing a captain's uniform. From this, Mr. Krabs comes to the conclusion that the ship is simply a derelict amusement park ride that holds no genuine treasure.
Deeply frustrated, Mr. Krabs decides to leave, but then realizes he could make lots of money by opening the hideout to the public as an attraction ride, although he ignores the terrible, unsafe condition that the ride is in. Soon, the ride is busy in operation with many people, despite the obvious dangers (the ship swings back and forth like a pendulum, yet there are no safety harnesses installed, causing riders to be tossed around and even thrown to the ground), but the riders ignore the perils anyway. SpongeBob and Patrick, distraught at first about losing their secret hideout, eagerly decide to ride the attraction one last time..
While in motion, the old ship loses planks of wood as it spins, and one of which hits the ride's controls, pushing the throttle and accelerating the ride to "beyond comprehension". The ride quickly picks up speed and spins 360 degrees over and over again around the swing, ejecting many riders off of the ship.
Meanwhile, one of the swing's supports, which was in bad disrepair, stresses as the ship swings around before finally snapping, causing the swing to shatter and tossing the ship high into the air. Aghast observers on the ride's sidelines watch as the ship, full of terrified riders as well as SpongeBob and Patrick (who are having the time of their life), plummets to the ground, imploding into an askew pile of wood planks and shards.
SpongeBob and Patrick, undisturbed and somehow unharmed by the impact, excitedly pop up from the rubble and comment that the ride was "awesome" and "totally realistic". However, a battered rider, bruised and covered in splinters all over, angrily points out that the "careless contraption" of a ride nearly killed them all. The other riders emerge with various injuries and furiously surround Mr. Krabs, who quickly becomes arrested by a waiting police officer. The officer then comments that Mr. Krabs will be less of a public danger in prison.
The scene then transitions to the ride's entrance, boarded up and condemned, as a saddened SpongeBob and Patrick helplessly overlook. They leave the site, but are swallowed up by the ground and sink through. They land on the deck of another shipwreck, which is discovered by SpongeBob to be the real Mauna Loa. SpongeBob then questions Patrick if he can keep a secret, with Patrick happily replying with "Nope!"
|( ‣ ) Associated production music|
|( • ) Original music|
|( ◦ ) SpongeBob music|
‣ Pinapple Luau - Nicolas Carr, Sage Guyton, Jeremy Wakefield [SpongeBob and Patrick playing tag/SpongeBob and Patrick continue playing tag]
‣ Dramatic Impact 2 - Ivor Slaney [SpongeBob falls off a cliff]
‣ Drama Link (g) - Hubert Clifford ["Hang on, I'm coming!"]
‣ Setting Sail - Dick Stephen Walter ["Whoa, what is this place?"]
‣ The Jovial Buccaneers [#33] - John Fox [pirate ship]
‣ Sea Battle [#45] - John Fox [SpongeBob and Patrick swordfighting]
‣ Dramatic Impact 5 - Ivor Slaney ["Patrick! I'm coming, buddy!"]
‣ Harp Ding - Nicolas Carr ["Patrick!"]
‣ Parting of the Clouds - Nicolas Carr [treasure]
‣ Vibe Q Sting - Nicolas Carr ["Wow, what's this?"]
‣ Steel Sting (b) - Jeremy Wakefield [SpongeBob goes to work]
‣ Nautical Hijinx - Nicolas Carr, Barry Anthony ["SpongeBob, what are you doing?"]
‣ The Drunken Sailor - Krabby Patty sculpture of pirate ship
‣ Steel Sting (a) - Jeremy Wakefield ["Porous freak."]
‣ Nautical Hijinx - Nicolas Carr, Barry Anthony [Patrick's t-shirt/Krabs enters the kitchen]
‣ Steel Sting (c) - Jeremy Wakefield [SpongeBob quickly leaves]
‣ Steel Sting - Jeremy Wakefield ["Hmm, a gum wrapper and a coin that says "Mauna Loa"."]
‣ Mr. Swashbuckle - James McConnel [Krabs talks about the Mauna Loa]
‣ Vibe Q Sting - Nicolas Carr ["Hmm..."]
‣ The Drunken Sailor - "Come on, Squidward. We got to let those two ding-a-lings lead us straight to the Mauna Loa!"
‣ Seaweed - Steve Belfer ["Hey, Patrick, do you think we gave away too much about our secret hideout?"]
‣ Primitive Force - Raymond C. Jones [seaweed moving]
‣ Drama Link (b) - Hubert Clifford ["We're being followed."]
‣ Nude Sting - Nicolas Carr ["I just saw the sign."]
‣ Another Krusty Krab Day - Michael Bolger, Nicolas Carr [Krabs at the hideout]
‣ Who Said That - Nicolas Carr, Barry Anthony [Krabs asks where the treasure is]
‣ Steel Licks - Jeremy Wakefield ["Pushovers."]
‣ Mr. Swashbuckle - James McConnel ["I knew I'd find it!"]
‣ Befuddled Gent - Phil Green [Token Has No Monetary Value]
‣ The Jovial Buccaneers [#32] - John Fox [treasure chest]
‣ The Jovial Buccaneers [#36] - John Fox [Krabs falls, breaking the box]
‣ Silly Shenanigans - Nicolas Carr, Barry Anthony ["Ha, ha, very clever, captain. Throw in Krabs, the old ringer, eh?"]
‣ Who Said That - Nicolas Carr, Barry Anthony [Krabs realizes it's an amusement park ride]
‣ Welcome to Glove World - Barry Anthony ["No wonder we were so amused."]
‣ Lite Conversation - Nicolas Carr, Barry Anthony ["This place ain't got no treasure! Keep your worthless hunk of junk!"]
‣ Welcome to Glove World - Barry Anthony ["Brace yourselves, fellers!"]
‣ Steel Licks (d) - Jeremy Wakefield [SpongeBob and Patrick sad]
‣ Welcome to Glove World - Barry Anthony [they ride on the ship]
‣ Slipping and Sliding Stooges - Nicolas Carr, Sage Guyton, Jeremy Wakefield [ride speeds up]
‣ Hawaiian Cocktail - Richard Myhill [Krabs arrested]
‣ Pua Paoakalani B - Kapono Beamer, Queen Lili'uokalani [hideout condemned]
‣ Horror Crash - Harry Lubin [SpongeBob and Patrick fall underground]
‣ Mr. Swashbuckle - James McConnel [The Real Mauna Loa]
- There are 50 anchors on the title card.
- The word "Mauna" is in Filipino language, it means to "anticipate."
- In real life, Mauna Loa is actually the largest volcano in the world (in terms of volume). There was also an actual ship called the S.S. Mauna Loa, which sunk in February 1942.
- The beginning of the episode is similar to the beginning of "Patrick SmartPants" except SpongeBob fell off a cliff but did not break his head and turn smart.
- When Patrick flings the token at SpongeBob, if one were to pause the screen image and look closely, the token clearly reads "Token has no monetary value."
- Mr. Krabs pronounces Mauna Loa two times correctly, when he discovers the token and when he goes into the Captain's Quarters.
- This is the second time a cavern appears. The first was in "Chum Caverns."
- This is the third time SpongeBob and Patrick are pirates. The first was "Arrgh!" and the second was "Grandpappy the Pirate."
- This is the fourth time Mr. Krabs is arrested, the first is in "The Smoking Peanut", the second is in "The Krusty Sponge" and the third is in "Patty Caper." He was almost arrested in "Banned in Bikini Bottom" for illegally selling Krabby Patties.
- This is the fifty-eighth episode with the title's name being a part of the story.
- This episode premiered on John O'Hurley's 56th birthday and three years after the Atlantis SquarePantis book was released.
- Though Mr. Krabs' token had no monetary value, Patrick bought something at the Krusty Krab with one.
- The kid who was at first too short to ride was seen on the ride just before.
- As the ride plummeted to the ground, it turned upside down, so everyone would've just fallen off the ship.