A Martian invader (Gregory Gaye) named Mota (no, not Manny Mota!) has designs on conquering the Earth, and with his atomic-powered craft and the aid of an embittered Nazi scientist (James Craven), he just may succeed. Only an intrepid pilot (Walter Reed) and his stalwart crew stand between mankind and their depraved schemes! High-flying Republic serial co-stars Lois Collier, Sandy Sanders, Harry Lauter. 12 chapters; 167 min. Standard; Soundtrack: English Dolby Digital mono.