The boys are given The Catcher in the Rye to read in school with warnings of vulgar scenes and foul language. Dissatisfied that the book is relatively tame, they are inspired to write a book of their own that contains true vulgarity. When the boys discover that Stan's mom has found their masterpiece, they blame its writing on Butters, who in turn becomes a famous celebrity for "his" amazing book. When Butters refuses to admit that the boys wrote the book, they seek revenge.
Mr. Garrison gives the children the book The Catcher in the Rye and says it was banned for its large amount of controversial subject matter. Due to how disturbing and offensive Mr. Garrison makes it sound, the entire class, particularly Cartman and the rest of the boys find themselves excited at the prospect of being allowed to read it. Unfortunately, after reading the book from start to finish, Stan, Kenny, Kyle and Cartman find nothing remotely vulgar about the book. Deciding to research why the book was banned in the first place, the boys discover that it was due to a man claiming the book caused him to murder John Lennon of the Beatles. Despite this information, the boys are horribly disappointed at how dull the book was, not seeing why the book was banned. They agree that they could write a book and get it banned much quicker and write a vulgar book just for the sake of writing a vulgar book. A montage shows the boys collaborating on the book for an unknown period of time, seeming to write down whatever disgusting thoughts pop into their heads while laughing the whole time. They name the book "The Tale of Scrotie McBoogerballs".
Meanwhile Butters, influenced by The Catcher In The Rye takes on the murderous desire to kill John Lennon, until his father informs him that he is already dead much to Butters' disappointment. Back at his home, Stan leaves the rough draft of the book in his drawer, where his mother Sharon finds it while sorting laundry. She starts reading but the explicitly of the book is so horrific that she immediately begins to vomit after merely reading the first sentence of the first chapter. Yet despite the horrible language and content, she finds herself amazed at how good it is. She gives it to Randy who also feels the same way about the book. When Stan finds that his parents took the book, he is afraid that this parents will punish him for the writing such a horrific story. He tells the other boys that they are collectively screwed, as each one intends to roll-over on the other. As none of them wants to take responsibility for writing the book, they decide to blame Butters.
Meanwhile, the other parents have all read the book and confront the boys on who wrote it. Butters claims responsibility due to having several blackouts after reading The Catcher in the Rye. Much to the boys' horror, the parents do not get angry at Butters, but praise him on his work and have even summoned an editor from Penguin Publishing, who wants to get first publishing rights to the book. The book becomes a global sensation and millions of copies are sold, having been translated into 26 languages. However, despite the praise the books gets, it seems no one capable of getting through the first paragraph without vomiting. The next day at school everyone likes Butters and thinks that he is an artistic genius, causing the boys to confront him. Butters however claims that even if he did not write the book, he still intends to take credit, due to years of being taken advantage of by the boys, and also due to the reading The Catcher in the Rye. Several of the girls defend Butter's writing, which only infuriates the boys further.
Apparently much of the book's subject matter involves comments directed at Sarah Jessica Parker, who is mentioned 465 times, which gets little controversy from the world, and only a slight annoyance from Parker's husband Matthew Broderick, despite her being dubbed as a "transvestite donkey witch." Meanwhile, due to the popularity of The Tale of Scrotie McBoogerballs, Butters and his parents are asked to be on the Today Show to discuss it. And although proud of their son's 'genius', Mr. & Mrs. Stotch have grounded Butters for the language used in the book. During the interview Butters is asked a series of questions about the book which he has to fake answering, as he hasn't even read the book. Matt Lauer and his co-hosts ask Butters whether or not he is afraid that the book will cause a murder attempt like the one done when a man attempted to kill Ronald Reagan after reading the book. Butters realized he was supposed to kill Reagan after reading the book and begins to set out to murder the former president, only to be told by Al Roker that he's already dead, much to Butters' disappointment again.
Fed up with Butters claiming creative credit for the book, the boys go seek to get the book banned with the School board. The board however dismisses their argument saying that they are just too young to understand the meaning of the book and claiming that it is actually based on world events, ignoring that the supposed author is the boys' age. The board then starts arguing about the content of the book making the boys leave in disgust. Pissed off, Cartman suggests that they kill Sarah Jessica Parker or help her get killed, which would cause everyone to assume that the book influenced the killer in the same way as The Catcher in the Rye influences John Lennon's killer, thus causing the book to be banned. Kyle and Stan immediately reject the idea, but Kenny agrees to go with it. Together they dress her up as a moose in an attempt to try and get her shot by hunters, to which she seemed to agree to without question. Though throughout the episodes she has displays a lack of awareness to anything that is happening around her.
Meanwhile, Butters informs the world that he intends to write a second book entitled, The Poop That Took a Pee. On the Today Show, Morgan Freeman reads the first five chapters, during which back in South Park, the boys believe that this will reveal to the world that Butters did not write the book. Much to their surprise however, people's reaction to the book is that while it's not as vulgar (due to Butters writing it in the manner of a small child using words like poop and Pee-Pee), they feel that Butters has gone to his roots, causing the book to be another success. Ironically, however, it inspires a man to kill the Kardashians (whom Butters himself loved) which the man referred to as "phonies", causing the public to become pissed off at Butters. To add to his troubles, Cartman then tells Butters the book will be banned as a result. He also tells Butters that he was sleep-walking again and was responsible for Sarah Jessica Parker being murdered in the woods. Although scared initially, Butters relaxes and states, "Ah, oh well. At least she was ugly".