Wembley and Boober must travel to the Cave of Shadows in order to find a cure for Gobo's Pebble Pox.

Cast: Terry Angus, Lee Armstrong, Myra Fried, Dave Goelz, John Gordon Sinclair, Tim Gosley, Kathryn Mullen, Jerry Nelson, Gerard Parkes, John Pattison, Karen Prell, Sandra Shamas, Bob Stutt, Cheryl Wagner, Steve Whitmire