This should actually be included in the series as episodes 10-11-etc. The story was weird as hell. A lot of going back and forward until the very end, just as I like them. It explains the little things left unexplained in the series and was even funnier than the series itself, even though it uses some of the jokes of the series. The cast was bigger and got a little better. The music is just as the series, with a new song that I actually enjoyed. Those two hours were just so full of content and funny that it didn't even feel like it was that long. Definitely worth watching right after the series!