Watch 123Movies. Jessup, forced to hide his true identity, is imprisoned on a deadly and desolate planet, the Star Prison. banished to mine rabid rivers for the elusive Fire Gems, Jessup and his men must battle bands of derelict prisoners and fight the fatal fangs of the Star Worms in order to supply the Lords of the Evil Empire with the sacred source of their hedonistic hallucinogenic opiates.