I was actually half expecting Lionel Jeffries to emerge in this truly daft, but oddly enjoyable, sci-fi yarn. His namesake Lang ("Maj. Rhodan") is tasked with leading a top secret mission to the moon. Upon arrival, his team must try to assist a visiting alien "Crest" (John Karlsen) who has leukaemia and his fellow traveller, the rather mean "Thora" (Essy Persson). They must get him treated back on Earth whilst avoiding killer robots and an even meaner fifth-column operation designed to eliminate both visitors. The effects are basic and pretty rotten, though still fun to watch; the robots about...