SpongeBob says that he couldn't wait for the ancient rains. He also brought an umbrella. Sandy tells him that it is the ancient ruins and not rains. They come to a huge sand castle which is the ruins. Sandy takes a picture. They are inside. They first see the Charted Caverns of Lameria. Sandy then tells SpongeBob not to touch anything. Then SpongeBob pulls a sandy toilet plunger. Then a twirly square hole comes and they walk in. They both wonder which way is top and bottom. SpongeBob says that the top is behind them. Then they both fall through the hole. They float down onto the floor. SpongeBob finally stops screaming. They come to a holographic projector. Sandy touches it. A crystal comes out. The crystal zaps Sandy's tail and bones are seen. The zap zaps another crystal and it shines on two diamonds. The diamonds come together in a tube shape. Three balls are shot out. They turn to robots. Two of them zap SpongeBob and Sandy. They float in zap bubbles to a room. It was full of creations. One of the statues hold the room together. Literally, A robot tells them that they weren't the civilization itself, but rather built by the civilization for janitorial needs. However a disaster struck, killing the great civilization. They were the only ones left, so they built their own civilization. However SpongeBob accidentally destroys the statue that is delicate. The room falls apart. Then the whole building fell apart. Two days later, They get out of the rubble. The robots aren't happy. SpongeBob feels sorry for them. The robots were sitting at a campfire with wieners wondering what to do now. So, SpongeBob gave them jobs as janitors at the Krusty Krab explaining to Mr. Krabs that he wouldn't have to pay them.
( ‣ ) Associated production music
( • ) Original music
( ◦ ) SpongeBob music
•Marlin March - Sage Guyton, Jeremy Wakefield [title card] ‣Vacation A - Kapono Beamer, Mac Prindy [opening] ‣ ? [they get off the bus] ‣ ? ["Behold the uncharted caverns of Lumeria."] ‣Tower of Evil - Jane Antonia Cornish [SpongeBob pulls a lever] ‣Adventure Fanfare 1 - Harry Bluestone, Emil Cadkin [spiral tunnel appears] ‣Hostile Space - Harry Lubin [SpongeBob and Sandy walk through the tunnel] ‣Tragic Bridge 4 - Phil Green [SpongeBob and Sandy falling] ‣Vault of Secrets - Jane Antonia Cornish [control module] ‣Frightmare - Jane Antonia Cornish [janitor-bots revealed] ‣ ? ["Whoa, what is this place?"] ‣ ? [sphere laser dichotomy] ‣The Magic Kingdom - Paul Louis Reeves [origin of janitor-bots] ‣Frightmare - Jane Antonia Cornish [SpongeBob breaks the sculpture] •Lap Steel - Nicolas Carr [two days later...] • ? - Pat Irwin ["Gee, I feel bad for those poor robots."] ‣Steel Licks (d) - Jeremy Wakefield ["Oh, please forgive me, robots!"] • ? - Michael Bolger, Nicolas Carr [ending]