This is mostly an extended version of a normal show. But this movie is very well done considering most sitcom to movie transitions are lackluster at best. Homer is at his best in this movie. The movie itself is about Springfield being over polluted and Lisa Simpson tries to get them to clean up the lake. After they agree, Homer decides to dump a container in the lake (this has been edited to not give away the movie. There are a lot of twists and turns in this movie worth catching. If you love the Simpson's, you should enjoy this one.