Set on the subterranean Mine-World, a band of human worker are treated like slaves under the power of the evil overlord Zygon until one, Orin, unearths the hilt of a mythical sword that only he can master. Escaping the planet, he runs into the rogue smuggler Dagg and a pair of helpful droids and the princess, who all team up to return to the Mine-World with a plan to defeat Zygon and free Orin's enslaved people.

• Kim Young-Sun Production
• Joe Colligan
• Carmen Argenziano
• Noelle North
• Anthony De Longis
• Tyke Caravelli
• Les Tremayne
• Ken Sansom
• John Moschitta Jr.