One stormy night while Squidward, SpongeBob and Mr. Krabs are about to leave the Krusty Krab, an old hagfish, named Madame Hagfish appears at the door of the Krusty Krab. Squidward is afraid of her and tells her that the Krusty Krab is closed, but she ignores him and orders. She attempts to convince Squidward to give her a Krabby Patty but he refuses, because it was closed and she didn't have the right and/or enough money (She has 3 seashells). After various attempts to make her leave SpongeBob whispers to the Hagfish. The Hagfish then leaves and claims that they haven't seen the last of her. Mr. Krabs questions SpongeBob on what he whispers and makes a joke, SpongeBob laughs suspiciously. Later, when the Krusty Krab closes, SpongeBob secretly goes behind the Krusty Krab to give The Hagfish two delicious Krabby Patties before being caught by Mr. Krabs. It is revealed that that was what SpongeBob whispered to The Hagfish. Mr. Krabs yells at SpongeBob and takes the patties. The Hagfish becomes furious and supposedly puts a curse on the Krusty Krab before flying away. SpongeBob becomes very worried about this but Mr. Krabs says that it is a bunch of nonsense. The next day, Mr. Krabs watches out the door the whole day and there are no customers. He says he has a funny feeling about the so-called curse. A plate then falls from the attic of the Krusty Krab. It startles Squidward, making him drop his coffee and starting a fire, burning much of Mr. Krabs' money. Mr. Krabs and SpongeBob then set out to try to find the Old Hag in hope that she would lift the curse. It takes them many hours to find her but they find a covered wagon that she lives in. Mr. Krabs begs for her to lift the curse. She agrees on a compromise. If they can find a sacred golden doubloon from the deadly golden eel. They find the eel, who is sleeping, and they try to get it from him but SpongeBob trips, thus waking him up. The doubloon flies off the eel and Mr. Krabs catches it. They get it to The Hagfish, who uses it for her laundry machine. The Hagfish agrees to lift the curse and takes the closed sign from the Krusty Krab front lawn. Many customers then show up at the Krusty Krab. Inside the Krusty Krab, Mr. Krabs again says that there is no such thing as curses, or witches, or magical sea creatures. As the episode ends, the Krusty Krab begins shaking, the electric eel pops up from underground scaring away all of the Krusty Krab's customers.
The original name for this episode was "Hagfish Hex," as seen on some of the original character storyboards on Facebook. To take a look, click here.
SpongeBob is easily able to knock the Giant Golden Eel out with a single punch. This might be because the Golden eel was weak.
The people who had umbrellas were whisked away by tornadoes. A fish who forgot his umbrella was left unharmed.