Jim Dale
Sir Mordred
Kenneth More
King Arthur
Ron Moody
Merlin
John Le Mesurier
Sir Gawain
Rodney Bewes
Clarence
Dennis Dugan
Tom Trimble
Pat Roach
Oaf
Sheila White
Alisande
Robert Beatty
Senator Milburn
Cyril Shaps
Dr. Zimmerman
Kevin Brennan
Winston
Ewen Solon
Watkins
A NASA spacecraft proves Einstein right when, traveling faster than light, it ends up near King Arthur's Camelot. On board are big-hearted Tom Trimble and Hermes, the look-alike robot he built. Tom immediately makes friends with pretty Alisande while becoming enemies with the evil knight Sir Mordred. It seems Mordred has joined up with the Sorcerer Merlin and they are both up to no good. It is now up to Tom to try and use 20th century technology to foil their plans.
