Mad scientist Dr. Krupp (Luis Aceves Castañeda) is determined to find and seize an ancient Aztec treasure. After discovering the location of a treasure map, he resolves to build a formidable robot to vanquish the mummy warrior protecting the map. Dr. Krupp eventually unleashes his humanoid robot on the mummy, in hopes of getting the map and using the treasure to build an army of killer robots. Only Krupp's colleague, Dr. Almada (Ramón Gay), and his wife (Rosita Arenas) stand in his way.
