The special episode starts with a recap, it ends at 25 minutes in. Some people say you shouldn't watch it, but if you want to know what happens with their friends, you really do have to watch it. They also don't cop out with the reason they were going to the other world, and the way it works makes sense, it's how I expected it to be anyway. The Jimmy Neutron shit makes more sense too, and goes along with what happened earlier in the show.
It does end on a cliffhanger, but with everything revealed and a clear idea of what's gonna happen next. It might get another season, if it did I'd watch it. People say the special is depressing and you shouldn't watch it, I think it ends on a hopeful note, though it does kind of breeze past some things.
