SpongeBob’s Atlantis SquarePantis (2007) Plot Summary

Patchy the Pirate is stuck in traffic on US 101 near Encino and becomes angry that he is going to miss the new SpongeBob episode. His cell phone rings, and Potty tells him to hurry because the episode is about to start. Patchy tells Potty to record the episode, but Potty tells him that he threw the Betamax machine in the garbage, angering Patchy. The traffic line moves, but Patchy soon discovers that Encino has vanished.

Later, Patchy hallucinates finding a man dressed in a tall SpongeBob outfit, who tells him that he is SpongeBob SquarePants. The SpongeBob then tells him that he will be back in Encino if he “believes.” He is woken up by Potty but learns that Encino is still missing.

After the end of the SpongeBob special, Patchy finds Encino shrunk to a tiny size and meets a family of three aliens, who explain that their son, Norbluck 5, was messing around with their shrink ray again. Patchy demands that the aliens return his town to full size, and they do so. After gratefully arriving back in his house in Encino, Patchy is crushed by a giant Potty the Parrot.

SpongeBob and Patrick are trying to take photos of bubbles they blew, but fail to do so. SpongeBob blows another bubble they can fit in, and they end up floating away in it to a cave, where they find a piece of a medallion to the lost city of Atlantis. Unaware of what it is, they take it to the Bikini Bottom Museum and run into Squidward, who thinks they stole the other displayed half of the medallion. He soon realizes they found the missing half and tells them it is the key to Atlantis. After hearing the story of Atlantis, the only thing SpongeBob and Patrick want to see is the city’s attraction, the “World’s Oldest Bubble.” Squidward proceeds to reconnect the two halves of the amulet, opening the “path to Atlantis,” a bus that runs on “song fuel.” The trio is joined by Mr. Krabs and Sandy, with the characters crash-landing into Atlantis. The group is unknowingly followed by Plankton, who plans to use the city’s powerful weapons for his scheme.

They meet the Atlantean Emperor, Lord Royal Highness, inside Atlantis, who shows them a grand tour of the fortress. During the tour, Mr. Krabs, Sandy, and Squidward each get distracted by places in Atlantis. Mr. Krabs by the treasury room, Sandy by the science laboratory, and Squidward by the art gallery. Meanwhile, Plankton enters the armory vault and steals a tank. SpongeBob and Patrick get to see the world’s oldest living bubble, but Patrick takes a picture of it, horrifying the pair as it accidentally pops.

As Mr. Krabs, Sandy, and Squidward relate their experiences to Lord Royal Highness, SpongeBob and Patrick attempt to conceal the bubble’s destruction until they blurt it out. Lord Royal Highness reveals that the bubble they popped was just a prop for the tourists and shows them the real oldest bubble, which Patrick pops. Angered, Lord Royal Highness summons the Atlantean Royal Guards to attack the group, but they manage to escape. Just as they flee outside, Plankton arrives in the stolen tank and fires at them, only to discover that it shoots ice cream. Lord Royal Highness captures Plankton and decides that “a talking speck” would be a fantastic replacement for the bubble. SpongeBob and his friends leave for Bikini Bottom on the bus, as Lord Royal Highness takes the medallion and orders one of his guards to throw it away.

SpongeBob and the others sing one last song, with the former being the only one happy to go home, as the episode ends.