Kermit the Frog is away traveling, leaving Fozzie Bear and the other Muppets in charge of the week's production number. On the day of the show, the Muppets receive a letter from Kermit informing them the production number is meant to pay tribute to Jim Henson. However, the group is unfamiliar with who Henson is. The rest of the special depicts the Muppets figuring out Jim Henson's relation to them, while simultaneously creating the production number. (thetvdb.com)