500 Keys

The Simpsons - Season 22 - Episode 21 - 500 Keys

Watch The Simpsons - 500 Keys online

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About this Simpsons episode:

The Simpsons - 500 Keys is the 21st episode of season 22 and number 485 overall in the series.

While trying to get Maggie out of Homer's locked car, the family finds out that they have been gathering keys for years, setting up three interconnected adventures: Homer finds a key that operates The Duff Blimp, Marge finds a key that operates an antique toy that makes farting noises, and Lisa finds a key that leads her to a secret classroom in Springfield Elementary.