"Touring makes you crazy," Frank Zappa says, explaining that the idea for this film came to him while the Mothers of Invention were touring. The story, interspersed with performances by the Mothers and the Royal Symphony Orchestra, is a tale of life on the road. The band members' main concerns are the search for groupies and the desire to get paid.

Frank Zappaas Member of Mothers of Invention (uncredited)
George Dukeas Member of Mothers of Invention
Theodore Bikelas Rance Muhammitz / Dave
Keith Moonas Hot Nun
Ringo Starras Larry the Dwarf / Frank Zappa
Tony Palmer