Haw-Haw Land

Haw-Haw Land is the tenth episode of Season 29.

Synopsis
Lisa becomes smitten with an older musician named Brendan, so both Nelson and Milhouse try to win Lisa over instead.

When the Simpsons go to a STEM conference, Lisa falls for a crooning jazz pianist named Brendan. Meanwhile, Bart discovers that he has an affinity for chemistry.

Full Story
After the title screen, it cuts right to the episode, which begins with a traffic jam showing the commuters on their way to work. The drivers get out of their cars and begin to sing about how bad Springfield is. When the song is done, a giant finger crushes all of the cars in the traffic jam. (A clear reference to The Simpsons: Tapped Out.) Lenny, seemingly, is the only person alive after this.

The scene then cuts to the Simpson family on the way to a STEM conference, where Lisa meets Brendan Beiderbecke, a boy who is proficient with the piano, and falls in love with him. She then finds out that he will go to her school. Meanwhile, Bart meets a chemist who shows him a chemical reaction that results with a small explosion. Bart then becomes very interested in chemistry.

The next day, Lisa gives Brendan a tour of school, where they meet Nelson. Meanwhile, Bart and Milhouse learn how to make ¨elephant toothpaste¨ from a German chemist.

Later, Bart tries it out again on his treehouse with Milhouse where they turn the leaves of the tree into rock candy after Homer and Marge leave the yard.

The bullies are overthrown by Brendan, including Lisa's ex-boyfriend Nelson, who tries to impress her musically at Phineas Q. Butterfat's Ice Cream Parlor, starting a conflict in her heart.

Homer and Marge get worried over Bart, however he seems to be doing good for once, but an accident at school is somehow linked to him.

The family goes to a talent show, where Bart will present a chemistry demonstration, while Nelson and Brendan perform. Nelson is booed all the way through while Brendan does well. However, he is disqualified for living in West Springfield and is going to be transferred to a school there. Lisa ends up alone, while Bart fills the school with a chemistry reaction.

In the final scene at the talent show's after-party, Marge apologizes to the viewers stating that this episode was supposed to parody ', not '. Homer states that no one there has seen Moonlight. When Marge offers to show him the movie as they have the DVD, Homer states that he would rather see  which everyone in the background is interested in watching.