Image via Wikipedia
According to The Playlist also, the story revolving the movie will focus on the Muppet gang getting back together to save their old telly haunt; a couple of humans ("Gary and Mary") and a puppet friend named Walter banding together to save the TV studio that the original show was shot in. A villain, Tex Richman is due to take over the studio in weeks and the gang must do something to stop the takeover. Plot details from Empire Online.
Good luck Segel and Stroller!!