The young inventors Dick and Jenny Brewster, build their own 'Hoverbug' and hope to win the race which has been organised for home-made Hovercraft, but their arch rivals, Charlie and Sydney, bend the rules by enlisting professional help and by employing devious means to sabotage the Hoverbug.

• Children's Film Foundation (CFF)
• Fanfare Films
• Jill Riddick
• John Trayhorn
• Francis Attard
• Gary Cann
• Arthur Howard
• Michael Balfour
• Peter Myers
• Cardew Robinson