"Trapdoor Springfield" is a popular episode from the animated television series The Simpsons. In this episode, the character Homer Simpson discovers a trapdoor in the basement of his home, leading to a series of humorous and unexpected events. The story combines elements of adventure and comedy, showcasing the show's signature style. The episode features various characters from Springfield, including Marge Simpson and Bart Simpson, as they navigate the challenges posed by the trapdoor. It highlights the quirky nature of the town and its residents, making it a memorable installment in the long-running series.