SpongeBob and Patrick board a bus in order to get home from Glove World!, a glove-themed amusement park that they enjoy. They accidentally board the wrong bus, which then takes them down a cliff. The cliff leads to a sort of aphotic zone called Rock Bottom, inhabited by multiple strange deep-sea animals. SpongeBob tells Patrick to wait while he goes to try and find a bus schedule. While SpongeBob is gone searching, Patrick gets on the bus to go home but accidentally leaves SpongeBob behind. SpongeBob tries to find a bus that will take him more but nothing happens.
After several unsuccessful attempts to get on the bus, SpongeBob heads to the bus station and waits in a very long line. By the time he gets to the front, he finds out that the last bus to Bikini Bottom will leave in a few seconds, but before he has time to react, it pulls away from the station. The ticketmaster leaves for the night, shutting off the lights in the process. SpongeBob, who is starting to show fear, takes out his glove flashlight, but the battery shorts out, leaving him in total darkness. As he stands alone in the station giving himself a pep-talk, he hears the familiar raspberry sound echoing, and makes a mad dash back to the cliff. The raspberry sound is getting closer, and SpongeBob cowers in fear, yelling out a weak threat. As the creature closes in, a bright light engulfs SpongeBob, and he lets out a scream. He is relieved when he noticed the light is coming from a friendly-looking anglerfish creature who found SpongeBob's lost glove balloon. SpongeBob sarcastically thanks him for solving the balloon problem but begins rambling about his other problem: trying to get home. The anglerfish blows up the balloon and ties it to SpongeBob's wrist. SpongeBob makes another sarcastic comment about how the balloon already has enough air, while closing his eyes and blowing raspberries. He opens his eyes to see he's floating in the air and understands the anglerfish was helping him using the unorthodox method of balloon travel. He thanks the anglerfish for his help, who replies with a polite "you're welcome" and waves goodbye. SpongeBob is able to take the currents directly to the front of his house. After he lands the balloon pops and the episode ends with Patrick, riding on the bus, making his way back to Rock Bottom thinking SpongeBob is still stuck there.
Mr. Lawrence stated that the idea for this episode came from getting on the wrong bus as a kid and the bus driver going the entire route before he would let him and his friend off in the right place, which frightened them both.
This is the first episode to feature Glove World!
Residents of Rock Bottom all speak by blowing a raspberry (sound made while sticking out your tongue) in between words. When SpongeBob tried to speak normal to the fish at the bus station, the fish did not understand his "accent" until SpongeBob started to blow his tongue to speak.
Rock Bottom's other areas are never shown and remain unknown. SpongeBob only stays near the bus stop, bus station, and the entrance road, not going any further. Though, in some video games such as Battle for Bikini Bottom, and SpongeBob's Boating Bash, Rock Bottom's other locations and sights are shown.
The opening credits for this episode are in light blue instead of the regular navy blue. This also happens in "Arrgh!," the sister episode.
Close to the cliff is a public toilet with a ? and a ¿. It is unknown which gender belongs to which bathroom.
Since the one-eyed creature that was also the bus station employee came out of the one with the ¿ and had a male voice, it could be hinted that ¿ is for males and ? is for females.
The fish that works at the bus station in Rock Bottom to give schedules of when the buses are coming is the same fish who stole SpongeBob's Kelp Nougat Krunch candy bar from the vending machine.
As the bus is carrying SpongeBob and Patrick descends down the cliff face, the dramatic incidental music is from the song "Whirlpool," performed by the Detroit, Michigan surf band, The Volcano.
In the level, Rock Bottom in Battle for Bikini Bottom, when the player first starts the level and runs towards the kandy vending machine near the bus stop, a bus will drive up, stop at the bus stop for a second and then continue driving. This references the incident in this episode.
The Dutch title of this episode is "Wachten op de bus," which means "Waiting For The Bus."
The bus stop sign reads "BUZ" with a "Z" at the end instead of an "S" at the end. The vending machine sign has a K replacing the C, and the N is backwards.
The buttons that SpongeBob press are A-B-E-F-A-C-F-E-C for a Kelp Nougat Crunch.
Rock Bottom is one of the few cities in the series besides Bikini Bottom. You can see more here.
In this episode, SpongeBob notices that his shoe is untied and ties it, however, in a future SpongeBob episode, "Your Shoe's Untied," he has forgotten how to tie his shoes and mentions that his shoes haven't been untied since SpongeBob was an egg. It is possible "Rock Bottom" took place after this episode.
In Croatian dub, the episode's name is "Dno Dna" translating to "The End of the End."
This episode is similar to Stephen King's 1980 short story, "Crouch End."
When SpongeBob imitates Grandpa SquarePants, he both looks and sounds like Grandpa Phil from Hey Arnold!.
At the beginning of the episode when SpongeBob says, "Another funtastic day at Glove World!," his lips don't move when he says, "Glove World!."
If you play frame-by frame when SpongeBob and Patrick are boarding the bus, SpongeBob's right arm is missing, but appears for a brief moment.
The second time SpongeBob checks for money in his pants, the pocket is fully brown.
When SpongeBob and Patrick get on the bus from Glove World!, SpongeBob doesn't have fifty cents for bus fare. But, when SpongeBob is in Rock Bottom, he is seen putting two coins that read "25" on them in a candy bar vending machine.
When the bus heads toward Rock Bottom, SpongeBob says, "I think we're on the wrong—AAAAAAAAAAAAAHHHH!—bus!," but the captions exclude it and just say bus. Nickelodeon UK kept the original captions.
When SpongeBob screams "Fish paste!," the original captions read "Fish face!"Nickelodeon UK kept the original captions.
SpongeBob says "Mmmmmmmm... Kelp Nougat Crunch." when looking at the vending machine, but the original captions say "Mmmmmmmm... Kelp Nugget Crunch." Nickelodeon UK kept the original captions.
When SpongeBob looks at the vending machine, it is facing him. But when he is choosing the candy he wants, it is facing the opposite side of the road that's at a 90 degree angle.
When SpongeBob told Patrick "50¢," Patrick said "Nope" (he does not even have that much money). Regular closed captions excluded Patrick's line, and it is a little hard to hear it.
When SpongeBob is yelling at the man at the bus station, a sign that reads "Information" can be seen above the window. But, when the lights shut off, the sign disappears.
When they arrive there is no candy machine.
When SpongeBob and Patrick get on the bus, there is a fish sleeping on one of the seats but, when they arrive at Rock Bottom, he is gone.
The information fish says that the next bus left in five seconds, But it came and went, that means that was only one second (although bus schedules aren't always reliable)
When SpongeBob was looking for a bus schedule, he had his balloon,but when he was chasing after the bus the balloon was not in his hands. Then in the next scene he had his balloon again.
When SpongeBob tries to find a way out after seeing the weird creatures exiting the bathrooms, he has his glove balloon. But when running for the bus that Patrick had entered, the balloon is gone.
When SpongeBob is first seen dialing the letters on the candy machine, the sign titled "BUZ" disappears. It reappears in the next scene.
When SpongeBob chases the bus (after pushing the candy bar like a pedal) his running animation shows him running forwards. However, he actually runs to the side.
When SpongeBob throws his glove hat on the ground, it disappears a bit later.
When SpongeBob was at the bus station in the dark, he had his glovelight. When he left the bus station and started heading toward the cliff, the glovelight was gone.
When Patrick tells SpongeBob "The bus is here!" he somehow had the 50¢ needed to ride the bus even though, he had already told SpongeBob he had no money.
When the cardboard SpongeBob was at the candy machine, it does not appear smiling, but when it falls, it is.
Instead of the tumbleweed being red, it is green in this episode.
When SpongeBob was walking across the street back to the vending machine, he was looking behind him if the bus came, but SpongeBob actually was looking at where he was standing at.
When the red fish blew up SpongeBob's balloon, he said it had enough AIR. However, they live underwater.
When the bus stops in Rock Bottom, the bubbles behind it freeze in mid-air.
When SpongeBob eats his glove candy he spits out right next to him, but when he comes back from trying to get a candy bar, it disappears.
When SpongeBob notices his shoes are untied, the shoe laces are black, compared to the normal white.
The distance between the bus stop and when the road goes up, varies between scenes.
When SpongeBob falls asleep while waiting in line at the bus station, it shows a clock that has two "3"s on it.