203b - Salsa Imbecilicus
The episode begins on another beautiful day at the Krusty Krab. Mr. Krabs once again foils another one of Plankton's attempts to steal the Krabby Patty Secret Formula and kicks him out. After having a chat with Sandy, Plankton comes up with an idea.
Plankton breaks into Patrick's rock and takes a sample of his saliva. Plankton then makes sauce in his kitchen, which incredibly smells horrible. Plankton explains to Karen that when he adds Patrick's saliva in the sauce, it will become Salsa Imbecilicus aka Idiot Sauce. He plans on giving the sauce to Mr. Krabs so he will become as dumb as Patrick and get the secret formula. Karen offered to help but Plankton refuses. Plankton began adding the Patrick's saliva in the sauce, however, the sauce boils over and splatters onto Plankton, which causes him to act stupid. The steam from the sauce gets flown through the chimney and absorbs a nearby cloud. The cloud then rains the sauce over Bikini Bottom, which causes the town to become idiots.
The next day, Sandy notices that everyone, including her friends, are acting stupid. She learns about the accident from Karen and also learned that the reason the idiot sauce didn't affect either of them was because Sandy was in her treedome and Karen is a computer. They try snapping Plankton out of his idiocy by doing many things like shining a light on him, feeding him with nuts, and even yelling at him. But their efforts were no avail. However, Sandy has an idea on how to fix this. Karen and Sandy opened up a new college education system called Bikini Bottom University where they managed to educate the entire town in one semester, which also helped return everyone back to their normal selves.
Plankton, on the other hand, was unable to learn anything because he continued to act dumb and became a school bully to Mr. Krabs. On the day of graduation, Mr. Krabs perfected the Krabby Patty formula in Home EC. However, when Plankton tasted the Krabby Patty, he demanded Mr. Krabs to hand him the formula, but was stopped by SpongeBob who inexplicably showed up to give Mr. Krabs his diploma. Mr. Krabs reveals that he took accelerated classes and graduated months ago. Plankton was confused as to why all this happened, but when Sandy showed up and graded Mr. Krabs an A+ for acting everything out, he realized the Mr. Krabs was only pretending to be scared. Defeated and humiliated, Mr. Krabs threw Plankton outside and made him land on Karen's computer screen. Karen carries Plankton away so he can start his post-college years.