SpongeBob and Patrick are enjoying the Biannual Jellyfish Convention. Patrick touches every display in sight (such as the sting on Dr. Manowars' face caused by Big Lenny), much to the dismay of the security guard. SpongeBob spots the "Jelly Spotters," the world's premiere jellyfish enthusiast club, whose membership consists entirely of Anchovies, except for their leader Kevin the Sea Cucumber. SpongeBob continuously tries to get Kevin's attention, and Kevin tells him to do things that could seriously harm him (such as punching his face with a glove and jumping off a building), which he actually does. Realizing that he'll do anything for him, he asks SpongeBob if he wants to join the Jelly Spotters, to which he excitedly says yes. Kevin tells him that he must first pass a "rigorous test," intending to get him hurt.
Kevin's first test for SpongeBob is to catch a jellyfish, which immediately flies into SpongeBob's net. Kevin smacks it out, and it stings him. He says to catch two jellyfish, and two jellyfish fly into SpongeBob's net. Kevin then says 20 jellyfish, and then 18 jellyfish fly into SpongeBob's net. Angry, Kevin kicks the net, making all the jellyfish sting him. Kevin continues to give SpongeBob many more "tests," all of which he passes effortlessly, with Kevin getting stung each time as a result. Eventually, Kevin is covered in stings and extremely frustrated that SpongeBob is passing everything with ease and that he is getting stung and SpongeBob is not hurt at all. He tells him that the final test is to catch a Queen Jellyfish. Then he ties him to a post, gives him a whistle that produces a "Queen Jellyfish call," which produces the sound "loser," and leaves him there.
SpongeBob is very tired and prepared to give up. He tries to tell Kevin that the call isn't working, but finds that he is gone. Suddenly, a Queen Jellyfish appears above SpongeBob and begins chasing him. Eventually, the queen corners him at the edge of a cliff, where it is revealed that it is a robot controlled by Kevin and the anchovies, who reveals his true intentions to SpongeBob and shows him several other people at the bottom of the pit below, who were his former "biggest fans." Before he can force SpongeBob off the cliff, however, a King Jellyfish appears and falls in love with the Queen Jellyfish. He tries to kiss her, and they all start running away. Soon, the Queen Jellyfish crashes into a billboard, destroying it. When the King Jellyfish sees this, he becomes angry and chases down SpongeBob, Kevin, and the anchovies, eventually cornering them in a cave. Kevin panics, and admits that he has no actual expertise in dealing with jellyfish (because he was just in it for the fashion). SpongeBob is the only person brave enough to confront him and blows a giant pie bubble, which the King Jellyfish takes and leaves. Kevin asks how he was able to do it. SpongeBob simply answers "Everyone loves pie!". The anchovies congratulate SpongeBob for saving them all, but Kevin says that SpongeBob is still not in the club because he did not catch a queen jellyfish. The anchovies think that SpongeBob is a more worthy leader than Kevin, and tear off his hat, giving it to SpongeBob as a "crown." SpongeBob replies that he didn't know it was a hat, and Kevin weakly replies that it wasn't.
SpongeBob tells Patrick about his experience and reveals that he turned the Jelly Spotters' offer down. Patrick says that he's glad SpongeBob learned his lesson and that hero worship is unhealthy. He then walks off, ironically dragging his own hero, Jeffrey Jellyfish, who is tied up in a wagon.
Patrick touching stuff, with the security guard telling him not to.
One of the anchovies saying, "Wah, wah, waaah" after Kevin gets stung, and Kevin getting shocked by jellyfishes.
Lists of tests Kevin gave to SpongeBob:
Catch a jellyfish
Catch two jellyfish
Catch twenty jellyfish
Allow jellyfish to eat jelly off your face
Catch a jellyfish blindfolded
Catch a jellyfish while standing on your head
Catch a queen jellyfish
Six other tests
This episode may take place between the events of "I Was a Teenage Gary," as SpongeBob and Patrick went out of town to go to a jellyfish convention (in a bus full of jellyfishers,) and weren't seen anywhere else other than Jellyfish Fields. However, It might not as the convention in the previous episode is annual, and this one is bi-annual.
If this takes place between the events of "I Was a Teenage Gary," then this is the only episode not to have any part in Bikini Bottom.
There are "Kevin's Ointment" billboards are seen throughout the episode and they are also seen in a few SpongeBob SquarePants video games.
This episode takes place after Battle for Bikini Bottom because SpongeBob seems a little less nervous about the King Jellyfish in this episode than in that game. Also, King Jellyfish does not seem to remember SpongeBob in that game.
SpongeBob states that he has never seen a Queen Jellyfish before that means that this episode takes place before "Jellyfishing."
This episode reveals that there is more than one Queen Jellyfish. It is possible that there is one for every species of Jellyfish.
This episode premiered on Rik Mayall's 43rd birthday.
Dr. Manowar was said to be the only person who was stung by Big Lenny and lived. This could be a reference to J.K. Rowling's Harry Potter series in which Harry was the only known person to survive a killing curse.
SpongeBob's obsessive need to repeat "Hi Kevin" during the convention is in direct correlation to episode "Little Debbie" of The Wonder Years in which Debbie Pfeiffer, Paul's sister, follows around Kevin Arnold saying "Hi Kevin" using the same mannerisms and dreamy tone of voice.
SpongeBob's mention of touching the hem of Kevin's pocket protector is a reference to the Bible ("A desperate woman brushed the hem of Christ's cloak to heal her disease." - Luke 8:43-48)
A banner in the background of the convention says, "Got Stung?," a reference to the former "Got Milk?" campaign (now called "milklife.")
When Patrick thought Kevin was a pickle instead of a cucumber, it may have been a reference to VeggieTales when they thought Larry was a pickle instead of a cucumber.
In some recent airings, the title card was not shown.
Instead it fades from black to the opening credits after the commercial break.