Boober is testing beluviouses (Fraggle tails, which flair out when a Fraggle is scared). Wembley wants to get even and scare Boober back, but things go too far... or do they?

Cast: Terry Angus, Dave Goelz, John Gordon Sinclair, Tim Gosley, Richard Hunt, Patricia Leeper, Kathryn Mullen, Jerry Nelson, Gerard Parkes, Mike Petersen, Karen Prell, Sandra Shamas, Bob Stutt, Tom Vandenberg, Cheryl Wagner