Ep 20. Gone Maggie Gone

In the 20th episode of the 19th season of The Simpsons, entitled "Gone Maggie Gone," the youngest member of the family, Maggie, goes missing. The episode begins with Marge receiving a call from Sister Bernadette of the Sacred Order of Sisters, who informs her that Maggie has been chosen as the "Chosen One" for a secret mission. The mission has been passed down from generation to generation and is said to involve retrieving a magical gem that will bring the end of the world unless it is returned to the nuns.

Marge sets out on a mission to find her daughter with the help of Lisa, who picks up on various clues left by the nuns that lead them to Bart's treehouse. There, they discover a cryptic message and a letter that gives clues about Maggie's whereabouts. They head to a nearby town and find the nuns staying at an inn.

At the inn, they discover that the nuns have left on their quest and took Maggie with them. Marge and Lisa decide to follow them, and they eventually end up in a mysterious cave, where they find the nuns and a man named Jasper, who is helping them. They explain that they need Maggie's help because she is the "Chosen One," and they are on a mission to stop the "Crunchy" from finding the gem and using it for their own nefarious purposes.

The Crunchy is a secret society of men who eat granola and enjoy yoga, and they are hot on the trail of the nuns and Maggie. Marge, Lisa, and the nuns find the gem, but it is revealed that Jasper is actually one of the Crunchy and has been using them to find the gem for the Crunchy's own benefit. The Crunchy then shows up and captures everyone, but Maggie manages to escape with the gem and save the day.

The theme of the episode revolves around the idea of mothers and daughters. Marge must go on a dangerous journey to save her daughter, and in doing so, she learns to listen to Lisa and trust her daughter's judgment. The episode is also a parody of various adventure films, such as Indiana Jones, and includes references to famous actors, such as Tom Hanks and Dan Brown.

"Gone Maggie Gone" is widely considered to be one of the best episodes of the series, thanks to its clever plot and numerous references to popular culture. It is a perfect representation of what makes The Simpsons such a beloved series, with its mix of humor, heart, and satire.